They are likely cheap toys and not even airsoft guns. A "cheap" airsoft gun is $200 - $300 not including BBs, magazines, batteries, a battery charger, etc. Also you'll need proper eyewear and whatnot. Expensive airsoft guns are $1,500, $2,000, $3,000, and up.
For bottom line reliability, I'd recommend, as well as many members here, the King Arms Colt M4. Reliably built with a good price point at $250 or so, not including the other things I mentioned. Save up some more money, if you but cheap crap it'll break down right away, it won't shoot properly, there may not be proper upgrades for it etc.
In order for us to tell you or show you where to buy anything airsoft, you need to be age verified on here. Find an AV'r near you using the "regional representative" portion of the forums.
ďREALITY IS LIKE A STONE. TO MANY ITíS HARD AND COLD, THEY CANíT HUG IT OR EAT IT, IT ONLY FRUSTERATES THEM AND DOESNíT DO THEM MUCH GOOD. TO OTHERS ITíS STRONG AND DEPENDABLE, YOU CAN BUILD WITH IT, BUILD UPON IT, OR WORK WITH IT, ALSO USE IT TO SMASH PEOPLE IN THE FACE.Ē