FBA prep centers in Wisconsin.

Flat Rate Prep is a Madison, Wisconsin FBA prep center that receives online-arbitrage, wholesale, private-label, and book inventory, completes the prep, and ships directly into Amazon. It charges one flat $2.25 per-unit rate that bundles receiving, FNSKU labeling, poly-bagging, bubble wrap, sticker removal, dunnage, and outbound boxes, so there are no per-material add-on fees. The climate-controlled facility runs two onsite loading docks and averages a 24 to 48 hour turnaround. It has operated since at least 2016, and the operator reports more than 620,000 items prepped.

StarShip Prep is a family-run prep and fulfillment business in Ashippun, Wisconsin, in Dodge County. Starship Prep LLC was formed in Wisconsin in June 2022 and its website dates to July 2022; in 2024 the site gave its location as Hartford, Wisconsin. Its lead service is Amazon FBA and Walmart WFS prep, with direct-to-consumer pick, pack and ship as a second line. Shipments are checked for damage on arrival, unboxed, counted and inspected, then labeled and packed to Amazon or Walmart requirements; shipping plans are built by the operator or the client and approved by the client. It publishes a rate card: $1.50 per single unit including labels, poly bags, bubble wrap and shipping boxes, $2.50 per bundle of up to 4 units, and $1.20 per wholesale unit, falling to $1.00 single and $1.75 bundle at 4,000 or more units a month. Shoes, glass and oversize items cost more, pallet storage is $40 per pallet a month, LTL is $30 a pallet, and DTC orders start at $3.00. Cautions: the contact email is a Gmail address and no street address is published. The LLC was administratively dissolved in May 2025 and has since been restored to good standing. Damaged items are destroyed after 30 days without instructions.

MDS Fulfillment is a fulfillment and warehousing company headquartered at 6555 West Mill Road in Milwaukee, Wisconsin, run by MDS Fulfillment, Inc., a Wisconsin corporation on record since 2005. It lists three Milwaukee warehouses (Mill Road, Green Tree Road and Douglas Avenue) and one in Phoenix, Arizona, and says the facilities total more than 450,000 sq ft. The core business is ecommerce and B2B order fulfillment, subscription box and kitting work, light assembly and product distribution. Its Amazon FBA prep page covers FNSKU and ASIN labeling with warning and compliance labels, polybagging on automated lines with suffocation labels, bundling, kitting and shrink wrapping, and describes building inbound shipment plans and printing box and pallet labels through Amazon's Selling Partner API, with Amazon-partnered pickups. Cautions: the website publishes no email address, so contact is by web form or phone (414-760-2100), and no prep prices are published. The Amazon prep page dates from August 2025 and first appears in web archives in November 2025, so the prep line is newer than the company. Wisconsin's registry lists the corporation as restored to good standing in January 2025, so its standing had lapsed before then. The site says MDS was established in 1972; the corporation on record dates from 2005, and the business was online as Midwest Distribution Systems by 2001.

Atomix Logistics is an ecommerce 3PL headquartered in Oak Creek, Wisconsin, south of Milwaukee, with further warehouses in Salt Lake City and Baltimore. Its site leads with DTC and B2B retail fulfillment for small consumer products, and Amazon is one of four channels it runs from a shared inventory pool. Its FBA prep page covers FNSKU labels, poly bags, bubble wrap, multipack bundles, case packing and master cartons, then carton and pallet labels, palletizing with corner protection, and booking small-parcel, LTL or FTL deliveries with appointments. Receiving includes a standard inspection, and lot and expiration dates can be tracked for regulated goods. Recartonizing inventory that fails Amazon's requirements is billed hourly as a special project. There is no published rate card: FBA work is quoted as a per-order fee plus per-case or per-pallet pick fees, and there is no order minimum. Cautions: prep is one line inside a DTC-first operation, and the FBA page is framed as case-pack replenishment priced per case or pallet pick, not per-unit prep of mixed arbitrage inventory. Each of the three warehouse pages lists FBA prep. Partnerships run on a 12-month term. Accuracy percentages and the written service guarantees are the operator's own figures.

Midwest AWD, legally Midwest Assembly, Warehouse and Distribution, is a Wisconsin warehousing and logistics company at 5001 S River Rd in West Bend, north of Milwaukee, describing a 500,000 square foot warehouse and family ownership under Mayer Enterprises. FBA prep is one line inside a broader business that also covers assembly and packaging, custom contract assembly, transportation, pick and pack, reverse logistics and direct to consumer fulfillment. The prep page is concrete about the work: inspection, labeling, polybagging for loose products, liquids and textiles, multipacks, kits and bundled sets, bubble wrap for fragile or sharp items, expiration dated goods, kitting, and compliance checks before shipments reach a fulfillment center. Pricing is quote based. The page says standard work like labeling or polybagging is typically per unit while custom kitting may be project based, but publishes no rates. Wisconsin registered the limited liability company in July 1996, the domain dates to June 2006 and the Internet Archive has captures from January 2007. One caution that matters for shortlisting. There is no email address published anywhere on the site and the domain carries no MX record at all, so the only routes in are the phone number and the web form.