ShipBob vs KSP: Which 3PL Fits Your Brand?

ShipBob runs a network of 50-plus fulfillment centers and splits your inventory across them. KSP runs one 225,000 sq ft building in the Midwest and ships every order from a single inventory pool. This guide is the arithmetic behind it: how many days to each coast, how deep the kitting goes, who answers your email, what each one charges, and what moving your operation to either one takes.

If you ship a few hundred to several thousand orders a month across a focused catalog, build kits or subscription boxes, or sell to retailers alongside your own store, one building wins more often than you'd expect. If your orders are spread evenly across the country and the delivery promise on your checkout page is the product, a network wins. We're KSP, so read the "How we wrote this" box before you take our word for anything.

The two operating models

A distributed network places your stock in several warehouses so each order ships from the closest one. ShipBob's version is its Inventory Placement Program, which splits and rebalances inventory across its US fulfillment centers on your behalf. Fewer shipping zones per parcel, lower postage per parcel, and more inventory in more places.

A single node keeps every unit in one building. One receiving dock, one count, one team, one set of carrier pickups. Postage per parcel is set by distance from that one building, and KSP's building sits in the middle of the country. Ground delivery reaches anywhere in the US in 1–3 days, and 2-day delivery anywhere in the US is available through overnight service, both from the same inventory pool. That is the number we hold ourselves to on our shipping page.

The trade is simple. A network buys lower average postage with duplicated inventory, duplicated receiving and a rebalancing process you don't control. A single node buys one clean inventory count and one team with a slightly longer average haul.

Side by side: one Midwest building vs a multi-warehouse network

Sources for every ShipBob cell are listed at the bottom of this post.

Who should pick a network

Pick ShipBob or another multi-warehouse network when any of these is true:

• Your customers are spread evenly across the country and postage is your biggest line item. Splitting inventory into three or four regions drops the average shipping zone, and at high volume that's real money. ShipBob's case studies are built on this math.
• You sell in Canada, the UK, the EU or Australia and want local fulfillment there. ShipBob has buildings in those countries. KSP ships internationally from Minnesota.
• Your product ships the same way every time and you don't need anyone to assemble, inspect, or relabel it. A standardized network does standardized work well.
• You want a software-first relationship. Dashboard, tickets, open API, and a success manager for the strategic conversations.

Who should pick one building

Pick KSP when any of these is true:

• You ship 500 to 10,000+ orders a month across a focused catalog. Our robots reward pick density. The rule of thumb we use: under about 250 live SKUs (variants, not parent products), and monthly orders divided by live SKUs of 3 or more. At that profile, one goods-to-person building moves your orders faster than a long tail spread over four warehouses.
• Kitting is part of the product. Subscription boxes, multi-component kits, retail displays, promotional builds, FBA bundles. We've built 20.9 million of them on a 50,000 sq ft floor, and the kit and the daily order flow live in the same building, so nothing gets built in one place and shipped from another. See kitting and assembly services for how a program runs.
• You sell to retailers and to consumers from the same stock. EDI through SPS Commerce, routing-guide labeling, pallets out of 29 dock doors, and parcels off the same inventory count. One pool means a Target PO and a Shopify order never fight over units in different buildings.
• You want one person who knows your account to answer. Your account manager is in the building. When something breaks on the floor, they walk to it.
• You hold regulated or sensitive product. Storage is climate-controlled and FDA-registered, with lot and expiry tracking for supplements, beauty and CBD.

Switching: what moves over, what gets rebuilt

The honest answer for either direction. Most of this comes straight from ShipBob's own switching guide and from how onboarding runs at KSP.

For what running every channel off one count takes operationally, see omnichannel fulfillment.

What moves easily

• Your product catalog. SKUs, barcodes, weights and dimensions export from your store or your current 3PL and import on the other side. Expect the new warehouse to re-measure on receipt.
• Your storefront connection. Shopify, Amazon, Walmart, WooCommerce and the other mainstream channels have a pre-built connector at both companies. Tracking flows back to your store the same way it does today.
• Your inventory, physically. Pallet it, label it to the new warehouse's receiving spec, and ship it. ShipBob's guide says to keep stock in the old warehouse until the new one is live, and that's right: run both for a few weeks, then clear the old location with a sale routed to it.
• Returns. Both companies process returns; the new return address goes on your labels and your policy page.

What has to be rebuilt

• Kit and bundle definitions. A bundle in one WMS is not a bundle in another. Every kit needs its bill of materials re-entered and a first-article build approved before the first batch. If you're coming off a network where boxes were pre-kitted elsewhere and shipped in, KSP will build them from components on site, which consolidates your workflow.
• Inventory placement. Moving from a network to KSP collapses three or four stock positions into one. Your safety stock and reorder points were set per location; recalculate them for one pool. Moving the other direction, you decide which SKUs go where and ShipBob's placement program takes over the split.
• Shipping rules at checkout. The delivery promise on your product page is tied to where stock sits. Re-map your checkout options to the new warehouse's carrier services and cutoffs. KSP's cutoff is 2 PM CST.
• Inbound logistics. Your supplier ships to a new address, or to several addresses. ShipBob's guide flags the new transit time from your manufacturer; KSP has one dock address and 29 doors.
• EDI trading partners. Retailer connections are rebuilt per warehouse. KSP runs them through SPS Commerce. Confirm documents, labels and routing guides for each retailer during onboarding, not after the first PO.
• Packaging spec. Inserts, tissue, branded boxes and packing order get re-specified and photographed at the new warehouse.

Switching usually goes faster than brands expect. The timeline gets set in onboarding, planned around your inbound, and both warehouses keep shipping until the new one runs clean. KSP has integrated a new customer in one day and shipped the next; the long pole is usually your inbound, not the connector.

What KSP doesn't do

• We don't split inventory across multiple warehouses. Every unit lives in one building in Brooklyn Park, MN. If your model depends on stock in three regions, we're the wrong fit.
• We don't have a West Coast building. Orders to California, Oregon and Washington ship from Minnesota. Ground reaches them inside our 1–3 day standard. If your checkout promises next-day ground in Los Angeles, we have an overnight option. We still get orders coast to coast within 3 days, and you have the option to choose overnight for guaranteed 2-day delivery.
• We don't run warehouses outside the US. International orders ship from our US inventory pool.
• We don't do refrigerated or frozen cold chain. Storage is climate-controlled and FDA-registered, which covers supplements, beauty, CBD and shelf-stable food; it doesn't cover product that has to stay cold.

The arithmetic for the brand in the middle

Most brands reading this aren't at either extreme. They ship 1,000 to 5,000 orders a month, hold 60 to 200 variants, build a kit or a box, and have a wholesale account or two. For that brand the comparison comes down to three numbers.

1. Postage. Send your last 90 days of ship-to ZIPs to both companies. ShipBob will model a split; KSP models zones and transit from one building. Compare the blended rate, not the headline.
2. Inventory carrying cost. One pool needs less safety stock than four. Price the duplicated units a network needs to keep every region in stock, and the receiving fees to put them there.
3. Kit labor and handoffs. If someone is assembling your product, price where that happens and how many times the finished unit gets touched before it ships. Built and shipped in one building is one touch.

Run those three and the answer usually shows up on its own. If ShipMonk, Stord, Flowspace or Red Stag are also on your list, our ShipBob alternatives comparison lays out nine ecommerce 3PLs in one table. If it's KSP, our fulfillment services page walks through receiving, storage, pick and pack, kitting and returns from the one building that does all of it.

FAQ

Is ShipBob cheaper than KSP?

It all depends on your operation. ShipBob bundles implementation, receiving, warehousing and pick/pack/ship, with kitting, B2B and returns billed on top. KSP quotes against your SKU count, order profile and ZIP history. Give both the same 90 days of orders and compare the blended total.

Can one Midwest warehouse deliver to both coasts fast enough?

For most brands, yes. From Brooklyn Park, MN, ground delivery reaches anywhere in the US in 1–3 days, and 2-day delivery to any US address is available through overnight service. If your checkout promises next-day ground on both coasts, that needs inventory on both coasts.

Does ShipBob do kitting?

Yes, at an additional cost and once approved, covering assembly of separate components and case-to-unit breakdown. ShipBob's subscription guide recommends pre-kitting curated boxes before sending them in. KSP builds kits from components on a 50,000 sq ft floor in the same building that ships them.

How long does switching 3PLs take?

Usually less time than brands expect. At KSP the timeline is set during onboarding and built around your inbound, with both warehouses running until the new one ships clean. ShipBob's implementation includes at least three training sessions before your first shipment and check-ins through the first 30 days. KSP has connected a new customer in one day and shipped the next; inbound freight is usually the long pole.

Talk to KSP

Send your ship-to ZIP history, monthly order count, live SKU count and a photo of anything we'd be building. We'll come back with a zone and transit model from one building and a quote built on your real orders.