If you get one from Space Coast Electronics, you might have to wait awhile. It took about two months from the time I
sent my MO until the time I got my laser to get one of their 50mW green laser pointers. Maybe it was a fluke, or
maybe not - somebody else had to return one because of a {vulgar term for feces}ty beam, and if I remember,
they had to wait a couple of months too.
As for "modded" vs. "OEM"... the "4.99 modded" type are made so they stay within CDRH Class IIIA limits - just
barely. Go to 5.00mW, and you've got a Class IIIB device. It's just legal horse puckey that all laser resellers have
to follow. If it's Class IIIA, they can sell it as a pointer, and the buyer is allowed to use it in public
without getting a license or filling variance papers out. But if it's 5mW to 499mW, it's a Class IIIB device, and
cannot be used in public without a license or variance.
(NOTE: these are US rules - I don't know how laser
classifications work overseas.)