I had my current ones for around 6 years and they get a lot of use as a full time instructor/skipper. Still don't leak, soles have gone a bit shiny so not good on a teal deck of a healing yacht but fine in a rib. Will definitely be buying some more. Warm in winter, cool in summer, feet don't sweat like plastic wellies and they go on for ever. I know people who buy rubber sailing boots from crew saver etc and have them replaced every 6 months as the rubber splits on the heel of toes.
My last pair of dubarry's ran for 7 years before being relegated to the shed for dog walking and camping when I got these current ones
RYA Instructor, Trainer, Examiner and Skipper
Freelance skipper, RYA Powerboat Trainer and Advanced Examiner