I've never heard of there being a print of this, so it might be rare, but I can think of two things to keep in mind:
1. The comic in question is included in full-color in the recent Surfin' the Highway reprint, so that may reduce demand (it's not a seen-nowhere-else exclusive).
2. Steve Purcell's signature probably doesn't increase the value all that much. It's one of the easier signatures to get, and when Telltale sells prints you can get them signed for $5 extra.
although we do still have a time machine, so I wouldn't completely rule out the possibility.