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Updating Walmart WFS Fees in Flashpricer
Update your Walmart WFS fulfillment fees in Flashpricer: enter package weight and dimensions or override the fee amount, understand which value wins, and bulk-update weight and dimensions by CSV.
Walmart Fulfillment Services (WFS) charges a fulfillment fee based on your product's weight and size. Flashpricer estimates that fee for each WFS listing, builds it into your profit and minimum price, and lets you fine-tune it — by entering package details or overriding the amount outright.
An accurate WFS fee matters: it's subtracted from your profit on every price and built into your minimum price, so a wrong fee can push your prices too low. This guide covers where to edit it, how Flashpricer decides which value to use, and how to update many items at once.
Where to edit it
On the Products page, hover the Profit column to open the fee breakdown, then click the pencil next to WFS Shipping Fee:
Two ways to set the fee
The Update WFS fees for the item modal gives you two options — switch between them at the top:
Option 1 — Fill in the package information
Enter the package Length, Width and Height in inches, and the Unit weight in pounds. Flashpricer recalculates the WFS fee live as you type. Tick any Additional product details that apply (leave them unticked if none do):
- ·Your item is an article of clothing. — adds Walmart's apparel surcharge (+$0.50).
- ·Your item is or contains a chemical, aerosol, pesticide or battery. — adds the dangerous-goods surcharge (+$0.50).
Option 2 — Override the fee amount
Switch to Override the fee amount and type the exact Fulfillment fee amount in dollars. This is the strongest setting — it's used as-is, skipping the weight/size calculation entirely. Click Save changes either way.
How Flashpricer picks the fee
For each WFS listing, Flashpricer uses the first of these that's available:
Your entries stick until you change them — an override or package details you set stay in place and keep winning over Walmart's reported weight on future syncs.
What goes into the calculation
When Flashpricer computes the fee from weight and size, it follows Walmart's WFS schedule:
- ·Dimensional weight —
length × width × height ÷ 139. Flashpricer bills the greater of your actual weight and this dimensional weight. - ·Packaging — adds
0.25 lb, then rounds up to the next whole pound. - ·Weight tiers — the rate steps up with the rounded weight (heavier items cost more, with per-pound increments above a few pounds).
- ·Surcharges — apparel (+$0.50), dangerous goods (+$0.50), items under $10 (+$1.00), and oversize dimensions add extra.
Want to sanity-check a number? Try our free WFS fee calculator.
Bulk-update weight & dimensions
To set package weight and dimensions for many items at once, upload a CSV. These are mapped columns — name them however you like, then match them to the right field during upload:
- ·SKU (required) and Sales Channel ID (required).
- ·Shipping Package Weight, Shipping Package Length, Shipping Package Width, Shipping Package Height — plus at least one of these.
- ·Dimensions go together — provide length, width and height as a set; a partial set errors ("All parcel dimensions must be provided together"), and each must be greater than 0.
- ·Leave a cell blank to clear that value.
To set an exact fee override (rather than weight/size), use the per-item Override the fee amount option in the modal above.
When the fee can't be calculated
If a WFS item has no weight anywhere, Flashpricer can't compute the fee — and with no fee, it can't work out your min/max, so repricing is blocked for that item. You'll see: "Missing shipping weight: unable to calculate WFS fees and profit. Min/max cannot be determined, which blocks repricing." Fix it by entering a weight (or a fee override) in the modal.
Frequently asked
Which value wins if I set several?
Do the checkboxes change the fee?
Why is an item blocked from repricing?
Can I update many items at once?
Edit them from each item's Profit breakdown on the Products page, or check a figure with the WFS fee calculator. Questions? Email success@flashpricer.com.