Susies 100mW modules are $76 IIRC, that's about the only consistant output green deal in that price range (although you'd still need to find a host, $12 through Rayfoss or possibly less here on the BST thread if you don't mind a used one)...
A couple of sites have "200mW" greens for around that amount, but you're rolling the dice and taking a chance of getting 40mW, 80mW, or somewhere in between, save up a few $$ and possibly look at the Rayfoss 200's for around $150, you'll at least end up closer to spec
o-like or rayfoss would be your best 2 choices to buy a cheap green laser. focalprice seems to have some pretty good deals. You may want to check them out as well.