Have you seen Fuglies? Australian company, does products for the ADF and they do real prescription. Don't know what the cost would look like to you, the seem to be in the 300$aud, which is sitting about 0.70 USD to 1 AUD
It doesn't look like they do a full google in prescription, but I have a regular set with their safety band, and they seem to work pretty well. its and elastic that is locked to the arm with a plastic tab, rather than just looped over. they list the different impact ratings for their lenses as well, so you should be able to compare with other makers.