Someone came along and said "no sir! You are in fact a lot smarter than me!"
A couple weeks ago someone was selling what appeared to be really cheap PvP gems. So of course I jumped right on that. He mailed them COD. At which point I looked at the gems, saw that the hybrid ones were clearly BC-era garbage, and returned them, saying I'd take the pure ones. So he sent them, I accepted, and then I realized that 20 AP gems are also garbage. That garbage cost me 90g each!
So I did what anyone would do: I tried to find someone stupider than me. I stuck them on the AH for 48 hour segments for about 30g higher. One sold. Then the other sold.
I was left confused. Why would someone buy such a weak gem? Fort he same price they could get an epic gem with double the AP.
Maybe there's something I missed. Could gems have a level limit on them, so a 59 or 69 twink might want them? I've not heard of such a thing and I know I've put LK gems in BC gear.
I could just stick with my original thought: the buyers were stupider than me. But that's rather stupid. Stupid is unpredictable. I want to know what would make them buy the gems, beyond mere stupidity. Maybe it was even not stupid.