You can make a hatchery for a lot less than $25, as long as you have a spare air pump. I've seen them made in everything from custom acryllic boxes to ziplock bags suspended over a flashlight. Google for "DIY brine shrimp hatchery" and you'll get a bunch of good links. Then you can buy the $3 box of brine eggs, and have more money for your 55 later 
