Look around at online retailers, ebay, and the buy sell trade forum.  If I were you I  would do this: go to the buy sell trade forum and make a thread that says, sell me your goggles for x amount of dollars, however much you want to spend.  If you don't find some you like just look at online retailers and ebay for models that have been around for a few years such as crowbars, EG1s, Smith Phenoms, etc.  I got some crowbars last year for about 50 or 60 bucks.