I got some Daytonas back in 2015 for £240. Seemed like a lot of money back then, but they are as comfortable as a pair of slippers. They're now nearing end of life - the left one has a hole in the top from shifting up, and they are all round scuffed to death. Might get another year out of them before they leak too much to be useful.
I know you can send them back to the factory to get them refurbished, but the last time I asked, they wanted another £240 + p&p, and they were going to keep them a few months while they did them; not sure it's worth it, but I've got a secondhand pair off ebay lined up ready to take their place.