Welcome to the forums. Enjoy your stay and the sport!
If you're looking for something really cheap just to give you a taste of what airsoft is all about, go on the website AirsoftGI.com and check out some of their Lancer Tactical AEGs. Very cheap (right around $80-$120), and supposedly worth the money. If you want something of considerably better quality for just a bit more money, however, I'd recommend a G&G Combat Machine. Great performance for the price, and plenty of models to choose from.
Now, when you say budget for "EVERYTHING", what do you meant exactly? Just a gun, BBs, and some eye protection? Or are you talking a gun, eyepro, tactical gear, BBs, sidearm, extra mags, BDUs, etc.? I ask because the latter of the two will be just about impossible to do with $200.