I picked up two pairs of laser-safety eye protection from vs eyeware for around 35 bucks each (on a slight sale). Don’t know much about LSEP, but they feel sturdy, and have the protected wavelength(s) printed on each side of the frame.
I also grabbed two pairs of the work glasses from Google at SF Maker Faire. They are CE certified and rated ANSI Z87.1-2010. The packaging states “These safety glasses block 99.9% of ultraviolet light up to 380nm. THEY DO NOT MEET RADIANT ENERGY TRANSMISSION REQUIREMENTS.” (their caps)
I wasn’t sure they were real protective glasses, but the lady at the google booth told me that they were, and to grab an extra pair, mentioning that “when we place an order for a couple of hundred-thousand of something like this, they come out very cheap per unit. A lot cheaper than eyes.”