If you want very high quality (with the relatively higher price), check out Rayfoss or O-like. For my needs, I strongly recommend LED Shoppe (where I purchased several 50Mw and 20Mw green lasers in the past and one blue/violet 50mW laser). Although they're inexpensive, they're one of the few companies that's known to sell good quality/legit lasers (i.e., they operate very near, at or over spec) to buyers who don't need the best, highest quality and don't want to spend a lot of money.
I've always been happy with my purchases, they arrive fast, the products work well and last and they accept credit cards with no hassle. Add with free shipping and it's a win-win.:wave:
Hope this helps