if you have a good shop around and you take it to them, rather than asking them to do a "house call", it shouldn't be much more than buying a new cylinder and key ... which wouldn't match your other locks
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics