I do not know the age of my liner since our pool was a bonus in our move 4 summers ago. The previous owners estimate the liner to be 10-15 years old, so I'm starting to investigate the costs so I'm prepared when the time comes to replace. I seem to have an unusual situation though. I have a 9 foot deep end, and the pool stores I have called tell me I can only buy a liner that will stretch to 7 feet. Does anyone know anywhere I can buy a liner to fit my deep end? My teens love the extra deepness and I'd hate to fill it in.