CW=Camping World DUH! Guess I should have figured that out!!!
I checked eBay out--they've got a couple for a 39'--one has a starting price of $225 and the other has a buy it now price for $399, so it looks like you did well, gsadmin!
I'm going to run these by Rick--it sure would be easier, the only thing is if you take it out on short trips a lot, it might be a pain to remove and put on the cover a lot. But it sure is a good alternative to the time and money spent to build a building!