Here's my list of HC's and TPB's for trade:
Warlock Masterworks v1
New Avengers v1 HC
Ultimate Six HC
East of West v1 and v2 TPB's
Wolverine Enemy of the State Ultmate Collection TPB
Wolverine by Claremont and Miller TPB (reprints mini-series 1-4)
X-Men: The Dark Phoenix Saga TPB
Captain America v5 by Morales and Bachalo
March On Ultimatum TPB
The Golden Age TPB
Superman For Tomorrow TPB
I have more, and will update this list periodically
*edited*