Oh, if its local. Go for it. You cant really loose when its only 30 dollars in this hobby. Plus, they would return a defective laser, if need be, right?
Edit: Also, add your approximate location to your info. It helps us when answering questions sometimes.
And you may even find someone near you that enjoys lasers
I don't know what country you live in, but if Amazon ships to you, I would recommend you check them out. There are lasers advertised as 5mW, but they are overspec to 50mw+. I recently bought one from Amazon, and its at least 50mW, but unfortunately, it got taken down and you can't buy it anymore. But I have found others from the same seller that are more than likely just as powerful.