hi I am selling a Tyranid Auction on Ebay right now (3 biovores). This isn't the most appealling auctions at the moment due to the fact Biovores aren't worth while. I would consider selling my 2 Raveners, or lots of termagaunts or 3 Lictors on ebay. If you are interested in any of these tell me and I will put the auction up and also send along the bits you need.
Enjoi.