The term 'Trades' stem from regular books that are tradebacks, correct? You have paperbacks, then tradebacks (hardback-sized paperbacks), then hardbacks.
My local shop doesn't have it. Evidently it has been out of print for a while. I can try another shop, when I get there in a couple weeks, but it's a slim chance for two reasons. One, I'm blonde and that's a long time out and two, the store I'm thinking of is hit or miss.