Originally Posted by
Bianchigirll
The seller is not the original owner? Looks like a warranty issue to me.
Personally I would keep looking, who knows where else the welder did a lousy job that day.
I don't think the original welder was at fault as the crack isn't through a weld. It looks like someone was too ham-handed with an allen wrench on the pinch bolt a few times.
If the bike is cheap enough, then carefully cutting off the broken ears and filing the tube round is worth the effort as there is plenty of seattube length to accept a collar. However, measure the OD of the seattube at the clamping point to be sure a collar is available in that size.