I was strolling around Windy, leveling ninja, when a member of my LS says that their going to get a ruby. Since I wanted to get all the advanced jobs anyway, I help him out. Run back to town, change jobs (31 monk/15 thf, so yes we did have TH), choco out to Bubu, get there, start killing, this was at 1 am. By the the time we dropped two rubies (what we needed) it was 7:30 in the morning (didn't have anything to do that day anyway). 6 and a half hours for two rubies. Also, based the amount of exp I gained, at about 10 a leech, we killed about 155 of them.
Now all I can say is, I'm only completing summoner so I can drop kick Carbuncle around!