I have a Schwinn bike trailer that I bought roughly 4 yours ago for around $120-130. The trailer has some miles on it but it still looks and works virtually brand new (been well kept and housed in a shed). A neighbor recently moved in and has been looking for one. Since my kids has been riding their own bikes so I have no use of this trailer and I’m thinking bout selling it to them. However, how much should I charge for it?

~$60-70 imho.

half retail is a good start , in general..

I was just looking for trailers, and for the most part they were listed at about half retail.

I saw two this week on CL, each for $25. No idea what brand or what the retail price was. I've also seen them advertised for much more.

I was thinking around $70 myself.........but I'm a sucker for ppl I like and will prob sell for less.........

It's your neighbor , why not just share it?

I use eBay to figure out an average price when selling things.