Originally slated as a 6-issue limited series that would have brought the original Valiant (V1) and Acclaim (V2) universes together into one cohesive timeline and dimension, Unity 2000 #3 is not only the last issue published in the series, but it is also one of the last issues published by Acclaim Comics in general.
Because Unity 2000 #3's publishing schedule was thrown off, not many comic shops received them as they originally ordered, creating a larger demand in the secondary market for the issue by Acclaim and Valiant collectors.