[PJ-Comix]

The best net profit margin I ever had was the time I picked up Dune Encyclopedia (hardback) at a flea market for a buck (if the vendor said two bucks I wouldn't have bought it). I put it on a 3-day eBay auction on a Sunday night and Wednesday night it sold for $202.50. That book became my holy grail and I still keep my eye out for it. Once I found the paperback version at the flea market and snapped it up at $10 and sold it for about $60 online. However, even Dune Encyclopedia prices have fallen. The hardback edition now fetches "only" about $100.

[PJ-Comix]

FYI. Brooklyn has a lot of wholesale outlets. Good place to get stuff for eBay.....But downtown L.A. is even better.

[dawn53]

I bought my husband a Japanese puzzle box at a garage sale for a buck. He loved to work out puzzle boxes, but mentioned to me that this one was rather unusual in that it had close to 50 moves in order to open it. After he had mastered it, I decided to sell it on ebay. The little box brought $430. We were astounded.

[FloridaBoy]

More power to them. We buy and sell some stuff on ebay and it does take work and time.

[Rebelbase]

My best deal selling was a Japanese Fender Telecaster with a warped neck I bought for $100 from a guy who advertised it for $300 in the newspaper. I tweaked the truss road a bit to straighen up the neck and sold it for $360 on Ebay

[Mygirlsmom]

Although I sell a lot of misc. stuff, my best category is vintage children's books. Bought a book for a quarter that I figured would go for $40 or $50, and it ended up at $367.00. Several have gone over $100. I agree, though with the person who posted that profit margins are way down on most items. Combine that with the high cost of shipping and it hardly pays to list a lot of things that used to be very profitable. I've been sticking to anything that I can ship media mail and to gently used clothing that can be stuffed into a Priority envelope.