For now the buy/sell classifieds are the classifieds on TheBeachcats.com here.
http://www.thebeachcats.com/classifieds/

And you don't even have to pay to place an ad there right now.

To welcome all the Catsailor.com regulars I've set all the ads to the low price of FREE during March. (regular $10 for boats and $5 for parts)

So try them out, clear out those extra boats and parts lying around.

And I haven't had time to deal with it yet, but I will be looking for business sponsors and banner advertisers for both sites.

Right now I only have an adrate sheet for TheBeachcats.com, see it here.
http://www.thebeachcats.com/adrates.htm