Alpha Flight 1-60
That's half the series in one chunk. This is Byrne's complete run plus Jim Lee's first published work in later issues.
Excalibur 1-30 + specials, and Excalibur 42-67 plus specials
These are actually 2 separate auctions but they comprise most everything Alan Davis ever did on the title. Great art and good stories.
Punisher 1-68 plus annuals
There's even a couple of hardcovers,
Stuck Rubber Baby and Any Empire
Or, more reasonable priced, a Joyce Chin full page splash.