I have the exact opposite situation. I got 9 pairs of plastic framed glasses on Amazon. They seem really legit. Only thing I can see through them is the sun unless I hold a light source directly up to the lenses. Amazon gave me a refund and told me not to use them. I'm going to try to research some more research on Monday like getting a hold of the company that gave them the ISO rating.
This is apparently the source of the glasses although the seller was third party. I don't want to toss out perfectly good glasses because Amazon freaked out and banned anyone not on an exclusive list of suppliers.
Is it really worth your eyes and the extra money to take a risk on the glasses that you're still not giving up on them and planning on researching them? Why not just buy one that you know is reputable?
See if any local welding supply stores have #14 or higher glass (or helmets) in stock. Some auto-shades can go that high, but many cap out at #13, and they're generally going to be >$300 for the ones that can darken to $14 or higher. If you end up using an auto-shade helmet you'll have to set the sensitivity and delay to their maximum values. Don't buy an auto-shade helmet that doesn't have these controls. It's also possible to stack a #10 welders glass plate inside an auto-shade helmet and tune the shade value to get to #14 if the auto-shade can't get that dark on its own. It should be impossible to see anything but the sun through the helmet + glass combination.
This is apparently the source of the glasses although the seller was third party. I don't want to toss out perfectly good glasses because Amazon freaked out and banned anyone not on an exclusive list of suppliers.
http://www.prosolareclipse.cc/products_list.html