Hmm. I'm not sure where to get glasses for the "plasma extreme ultraviolet" (6.5-6.7nm laser).
. .
But, if you want to risk your eyesight to save a few $, go ahead. Many here will not recommend it, and will tell you that a lifetime of (partial or complete) blindness isn't worth saving a few $ now.
The cheap ($10) glasses will not provide the same protection as ($150) certified laser-protection glasses. The $10 cheapo's will melt very fast and not provide protection for more than a few seconds and the $150 certified glasses will provide protection for a lifetime.
Of course, there
is a nice middle ground:
Dragon Lasers:
Laser Glasses - Red laser beam protection 600-740nm :: Laser Safety :: Dragon Lasers
Zonestealth:
Protection Glasses for 650nm Red Laser <-- the ones I use for Red lasers