Umm... $15 and there were plastic?.. Probably welding glasses .... True Didymium glasses have a rose-purple tint and are "glass"... ACE stands for Amethyst Contrast Enhancer.. As for the $15 ones unless the are specifically labeled ACE 202 or Didymium I would be very doubtful.... You may want to go to site below and read up and check prices on true ACE 202 glasses...
http://www.phillips-safety.com/store...boqn0tfl3j7hq6
And yes they can be some what dark but you can add extra light to work area to brighten things up a bit....
Also keep in mind the ACE glasses are not torch specific so if you are buying a decent pair of them they will work when you step up to large more sophisticated torch.... ACE lenses (alone) are just fine if you stay in the soft (soda lime) glass realm ... IF you intend to go into borosilicate glass you may need additional protection by adding welding shades to ACE lenses...
Dale
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