Regarding the Planets, this 1994 list really underscores the concept put forward by @sfcityduck and a few others in this thread that "Science Fiction Comics" should be/was about the contents of the book, not the cover. This explains why the 1994 list simply ranks the Planets in order of their issue number. This was true in 1994 and also 1993. The thinking being that issue #1 is more valuable than issue #2 is more valuable than issue #3 etc. There is the one exception with the Planet #15, which I guess must have been singled out way back when as the "low distribution" cult () Planet issue. Though we all "know" now that #14 is just about as scarce as #15. In other words, the cover itself played minimal (if not zero) role in assembling the 1994 list.
If the cover had counted at all (and of course which counts for SO MUCH today), I expect the list from Planet #1 to Planet #12 plus Planet #15 would have looked like this, based on the collective opinions expressed by the Planet boardies, the dollars spent by the Planet boardies (), and a bit of my own preference:
Planet 1
Planet 2
Planet 15
Planet 5, Planet 8, Planet 10 (tie)
Planet 6
Planet 11
Planet 3
Planet 4
Planet 7
Planet 9
Planet 12