My wife and I recently took our snow corn to the vet (nothing too serious). The vet was so taken aback, I guess my wife has had the snake for 14 years and it was already 3 when she bought it! So with proper care 15+ is at least attainable!

1.0 butter bee ball python (Weaver)
0.1 snow corn (Cid)
0.0.1 San Felipe rosy boa (Rogue)