TheFirstAvenger wrote:
So just checked the list... what wasn't noted was that X-Force Omnibus is at #152 with only an estimated quantity of 671.

Wow! I thought it would have been higher.

Could the fact that two Omnibus were released in the same month have split the numbers between it and Iron Man by Layton?
I think X-force did bad because lots of it had already been reprinted as MPC, see below

X-Force - Cable & The New Mutants New Mutants #86-94, Annual #5
X-Force - A Force To Be Reckoned With New Mutants #98-100, X-Force #1-4, Spider-Man #16
X-Force - Under The Gun X-Force #5-15, material from X-Force Annual #1
X-Force - Assault on Graymalkin New Warriors (1990) #31 and X-Force (1991) #19-25
X-Force - Toy Soldiers X-Force (1991) #26-31, Annual #2, Nomad (1992) #20X-Force Child's Play X-Force (1991) #32-37 and Annual #3, and New Warriors (1990) #45-46