You can get last year's model Smith Fuse goggles for $30 and $40 at TJ Maxx / Marshalls all day long. $40 is too much for a used pair. Fair price for a used pair would be $30-$40 *if they included a spare lens* and the microfiber bag..
I got a pair of last year's Smith Phenoms for $40 at my local Marshalls. Brand new.