I did the math for buying Flawless Star Amethyst gems (3 of 'em) to be combined up into a Perfect Star Amethyst, and think I figured out how people can make 143k with nearly no effort. Buy 3 of the Flawless Star Amethysts on the AH (2,066,768g average per, 6,200,304 total) then bring them to me along with the 100k and tomes needed to craft the Perfect Star Ruby (6,300,304 total) and then sell them on the AH. They're currently going for 6.416,585g per on average.
Just an idea, what do you guys think?
6,416,585 - 6,300,304 = 116,281g profit per gem.
Word, I did indeed forget about that. Thank for reminding me!
Well that part doesn't matter because a friend of mine already gave me the Perfect Star Amethyst & Perfect Star Ruby recipes for free.