Last updated: October 8, 2026.

Online marketplaces make it easy to compare thousands of sellers, but the protection you get can vary depending on the platform, the item and how you pay.

1. Check the Seller, Not Just the Marketplace

Read recent feedback and look for patterns in complaints. A well-known marketplace does not make every individual seller equally reliable.

2. Look for Photos of the Actual Item

For used or unique goods, stock images tell you little about condition. Ask for additional photos when defects, accessories or authenticity matter.

3. Read the Return and Refund Rules

FTC guidance notes that marketplaces differ in how they handle refunds and disputes. Know the deadline and what evidence the platform expects.

4. Keep Payment Inside the Platform

A seller asking you to move payment to wire transfer, gift cards or cryptocurrency may also be asking you to give up marketplace protections.

5. Calculate the Real Price

Add shipping, taxes, service charges and possible return shipping. A low listing price can stop being a deal once fees are included.

6. Save the Listing and Messages

Keep copies of the description, photos, seller promises and delivery estimates in case the listing later changes or disappears.

7. Watch the Deadlines

Buyer-protection windows can be short. Open a claim promptly if an item never arrives or is materially different from what was advertised.

Related reading: Free trials and auto-renewals checklist · How to compare prices more carefully

The Bottom Line

A marketplace is a venue, not a guarantee. Read the protection rules before the purchase rather than after something goes wrong.

Source: FTC Consumer Advice — Buying From an Online Marketplace.