trade

are you allowed to trade here

nope, sorry

Only exchange ideas and experience - THAT should be enough

Does anyone know of any web sites where the OP could look for on-line swaps? I agree, this forum isn’t one of them, but there must be a few out there.

You can try this place. www.railroad-line.com

You will have to register and join the site. Down the page under Company Store is a forum called Swap Meet. I have never used this site to exchange anything.

There’s this one as well.

http://www.modelrailroadforums.com

The Whistle Post has a classified section.
http://www.thewhistlepost.com/forums/announcements/8080-check-out-classifieds-buy-sell-trade-auction.html

There is an HO scale yardsale group on Yahoo.