Prescription sunglasses best place to buy?

[Beaniebabe1]

I want to get some cool/desgner prescription sunglasses. Suggestions of good online retailers would be great.

No idea if they have cool designs etc, but I recently bought glasses from asda. They were just basic frames (not prada, chanel etc) but varifocals, and asda were £300 cheaper than specsavers! They did say I could could have the 2nd pair or sunglasses instead. My nearest asda opticians were about a 40min round trip, but it was worth it. I don't know if they are online though.