Originally Posted by
mechBgon
If it's on the downtube, getting the drilled-out riv-nut out of the frame will require removing either the fork or the bottom bracket, so that would put you into an overhaul of one or the other, which is probably around $20 labor for the overhaul, plus $15-$20 for the riv-nut job itself (high risk factor, specialty tools).
It's actually on the seattube so I'd imagine you just pull the seatpost out?