International shipping for US sellers

When you sell to a buyer outside the United States, your order ships with USPS International. Whatnot chooses the service and calculates the shipping price automatically, based on the package's destination and weight. 

USPS International rates on Whatnot were last updated on October 12, 2026.

Which USPS service is used

Whatnot picks the service for you. You don't need to choose one.

The $400 limit applies to everything in the package. For example, five $100 items bundled in one package ship with Priority Mail International.

About 9 in 10 international orders on Whatnot ship with First-Class Package International.

What international shipping costs

Prices depend on the destination country and the package weight. USPS groups countries into price groups, so nearby countries often share a price.

First-Class Package International (up to 4 lbs)

Priority Mail International (over 4 lbs, or shipments worth $400 or more)

Packages over 20 lbs use Commercial Base USPS international prices. Some destinations don't accept heavier packages. If a package is over a country's limit, the order can't be purchased.

Packaging and restricted items

Packaging: Use your own packaging for First-Class Package International orders. For Priority Mail International orders, you can use your own packaging or USPS Priority Mail International packaging.

Restricted items: USPS doesn't allow some items to ship internationally, including:

• Perfume and other fragrances, including alcohol-free oils
• Lithium batteries that aren't installed in a device
• Aerosols and other flammable items

Each country also has its own import rules. Check the USPS Individual Country Listings before shipping something unusual. Packages with restricted items may be returned, and the order may be canceled. See Hazardous Materials and Flammable Substances for more on shipping these items.

High-value orders

If a shipment is worth more than $2,500, you’ll need to file Electronic Export Information (EEI) and add an Internal Transaction Number (ITN) before you can print the label. Shipments to Canada don’t need one unless the goods require an export license. See Adding an ITN for international shipments over $2,500 for details on how to file.

FAQs

Can I choose between First-Class Package International and Priority Mail International?

No. Whatnot chooses the service automatically based on the package's weight and value.

Who pays for international shipping?

Buyers pay the shipping price at checkout, unless you offer free shipping or use Buyer Pays Max, in which case you cover some or all of it. Customs duties and import charges for orders from US sellers are collected from the buyer on or before delivery.

Why did my buyer's shipping price change on October 12?

Whatnot's USPS International rates were updated on October 12, 2026. Most shipments now cost the same or less, including nearly all shipments to Canada. Some package weights and destinations, such as packages over 8 oz to Australia, cost more.

Where can buyers learn about customs charges?

Buyers can read International shipping customs and imports.