I will stick with replacing batteries or using Solar, 500 pounds for a service that's a hell of a lot of batteries, or you could purchase a few watches. I had Seiko Diver back in 80's and also needed a service, 8 weeks later and $184 AUD (1987) to service the watch as it was losing time, ended up selling it for $50.. I said back then I would never own another Automatic due to the servicing fees.