Ive never been willing to spend the money on a pair of those Costa-whole-lotta glasses.
The $14.00 specials at BPS work just fine for me.

I've managed to keep a pair of Woo Dave's out of the water and off the pavement for about 6 years. Lost them just this past Saturday but I found them in the driveway the next morning.

I've re-glued them, re-screwed them, and even tattoed them.