Since I'm ending up creating the box art designs and foam block designs for multiple compact Macintosh models, I'd like to get an idea of the general interest for prints of each particular model's replica boxing.  Note that the Macintosh Plus in particular has a few different revisions of box art, as noted in the questions.   Regarding the questions of shaped foam blocks, generally you'd want to select either "cardboard only" or "with shaped foam blocks," but not both.  Only check both