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Selling Your Stuff Online: Platform by Platform

By the StackMargins team · Updated October 2026 · Income

The average household holds $1,000-3,000 of sellable value. The platform choice decides how much of it converts and how fast.

Matching item to platform

Facebook Marketplace: furniture, appliances, bulky anything,local pickup, no fees, no shipping. EBay: branded clothing, electronics, collectibles,national buyers pay what locals won't, minus ~13% fees.

Poshmark/Mercari for closet cleanup. Swappa for phones – safe IMEI-checked sales. Specialty boards—Reverb for gear, Discogs for records—where collectors pay premiums.

The conversion mechanics

Photos on a clean background in daylight triple response rates. One $20 clamp light pays for itself on the first listing. Price at 60-70% of completed listings—it moves in a week.

Bundle slow movers into lots. A $12 item alone rots; five of them at $40 ships once and clears a shelf.

The takeaway: Match item to platform, shoot daylight photos, price off completed listings, and bundle the slow shelf. One weekend typically clears $300-800.

Common questions

What sells fastest?

Small electronics, branded clothing in good condition, tools, and baby gear. Furniture sales are slow.

Is shipping scary?

eBay calculates and labels for you. A kitchen scale and recycled boxes cover the rest. Start local-only and graduate.