I know there are several folks here that hate Botach (I've had spotty luck with them too), but they have a decent deal going on for Remington T-60 Shooting glasses. I think they'd be a good buy to have on hand for new shooters. They are $4.99 shipped.
http://www.ebay.com/itm/Remington-T-60-Safety-Shooting-Glasses-Case-/370996412490?pt=US_Sunglasses&var=&hash=item950dd9a71e
http://www.ebay.com/itm/Remington-T-60-Safety-Shooting-Glasses-Case-/370996412490?pt=US_Sunglasses&var=&hash=item950dd9a71e