Cell phone games are meant to be played for a minute or two here and there while you're waiting for something else to happen.
ie: train, bus, shitter, laundromat, waiting for your lunch at the bar/diner/whatever.
99 cents is a perfect price for this. It's not spoiling any market, except for the faggot "I play jrpgs on my DS while I'm sitting on my mothers couch" market.

