I can't do contacts - my eyes dry out under them while sailing and I end up having to literally peel them off my eyeballs at the end of the day...that's not pleasant.

My last pair of Costas ran about $300 with the prescription lenses. I had a $400 pair of Rudy Projects that did actually find their way to the bottom of the lake - they were really old, though and in need of replacement. Still, though, I offered one of our club divers (who was inspecting dock anchors) $100 if he could find them...but he never tried.