As of November 22--
Sonic:
#28 - $1.50
#30 - $.50 (Cover fell off, but still with comic-- could be taped back on)
#31-38,40-43 $1 each (some are more worn than others, though)
#115 - $1
#123 - $1

Knuckles:
#4, #5, #8-#10, #27 - $1.50 each

I also have some scraps of comics (some with pages cut out, torn covers, creased, it depends)-- very poor condition, but in case you were interested: Sonic Triple Trouble, Sonic and Knuckles (2 of those), #54)

Let me know if you're interested