I found selling off my fast track [& some cars] of which I had several hundred linear feet and somewhere in the teens of switches to be ... Kinda fun. I used the ogr, eBay and online retailers to guess at a price. I did not sweat the "profits". I was more interested in finding good homes etc... I got quite good at guessing shipping and making boxes... From time to time I even would beat a flat rate box. Once or twice I cut some slack on shipping to the buyer because that's what I wanted to do... And eventually it was all gone. I tried to price it to get interest right away. The languishing ad .... languishes.