If you're referring to the one in that link for a 200mW for $120, a fool and their $120 will soon be parted.
A quick look at AAA battery specs, laser diode power consumption and efficiency of laser crystals will show that even without an IR blocking (which by the way, any decent 532nm laser has, no matter where they are produced), 200mW from this combination is not possible and even 50mW is improbable.
Don't expect to lookup a Samsung 808nm diode like they say it uses, I downloaded the Samsung catalog and Samsung doesn't even make an 808nm diode.
If you look at the specs on this it says, less than 200mW and that's what you'll get, way less than 200mW.
It also says, "about 2 times brighter than the 10mW laser with a bigger dot", I would say that means it's probably 25mW at most, but don't bet on it.
Then they also cover themselves by putting this warning on the item description.
"Caution: the 200mW rating is claimed by the manufacturer and we do not have the correct equipments to validate this"