I purchased a Beeman at Wally World last year. i got it for pest control around the house and in that role it does just fine. It is not the most beautiful, most accurate, or most powerful. It does work for its intended use. It has both the .177 and .22 barrels. I normally use the 22 barrel on it.
So what do you plan on doing with it? If it is just to pass the time away, you can't go wrong with one of the $100 Beeman/Gamo/Crosman wally world specials.
If you want true accuracy and are looking to going into competition, forget it, you'll have to pony up the money for a good one.