I don't know if you're getting mates rates or something, but 2 lenses + shipping is coming to a shade under 55 quid for me, and that's assuming I don't get hit with VAT + duty which would likely bring it to the 65 pounds mark... It's cheaper to buy a new set of goggles with spare lense at that rate (if I could find a uk stockist with a prism lense that is!)