Good review. I have one identical it is made by Tesoar. Mine was £3 at a car boot sale. Mine can light a match at close range when focused which is surprising. These are great little lasers, no need to worry about them as they don't break the bank, and they work very well even in the cold.
The one I have from Tesoar isn't that great, pretty surprised you can burn with it. The best thing I can do is poke holes through a trash bag with it :crackup:
Anyway, OP, nice review! Pretty decent for a first especially