I don't see what that has to do with my point. Yes, it's a pain in the ass to farm Mesa. But I was saying that buying the pieces for Mesa Prime from other players, plus the costs of a potato and slot, would be cheaper than buying Mesa from the market (unless you manage to snag her with a hefty Darvo discount).
You still have to do the quests first, but the tedium of getting Mesa is the boss fight. Especially if you have players that haven't encountered mechanics like MAV in your squad.