Neither of Ozzy's testicles descended, and our vet recommended he had them both removed, but he said that as they were probably working as normal then it would be ok to wait, as we'd said we wanted him to mature hormonally before he was castrated. He had the op at about 16 months old, (3 and a half years ago) and one of them was difficult to locate, apparently it was high up in his abdomen. I'm fairly sure that the cost was nowhere near the £800 you have been quoted - more like £200 ish. If I were you I'd get a second and even a third opinion - I think your vets are trying to fleece you! And while you are at it, change vets!