You could get more for Meach then Moore but trading Meach for anything less than a 1 would be stupid as for Lance Moore he is worth at most a late 2nd or early 3rd with possibly a late round pick.
Obviously Moore is expendable but Chicago doesn't have a third and they will as the Giants be looking for a big receiver. Chicago's mid 2nd is too high for Moore, and truely the Giant's need is a big redzone capable WR thus eliminating Moore.
On the bright side it is very possible that Moore might go to the Chiefs, Dolphins, Bengals or Browns for early third IF the Saints so choose.