The cost of airsoft guns varies greatly. It all depends on your budget and what kind of quality you are looking for. If you want to, you could buy a very low quality plastic spring pistol on Ebay.com that shoots about 20ft. These will cost a few dollars. However, airsoft guns can cost anywhere from a couple dollars to $3,500. Guns at this high price range are exclusive, like the echo 1 minigun. However there is everything in between. For $80-$150 you can get very good airsoft guns that are decent quality.
Some good sites:
airsoftgi.com
evike.com
airsoftmegastore.com (<--- good guns at a lower price)
An Airsoft gun
A pump airsoft gun is a gun that has to be pumped every time before shooting. Ex. Airsoft shotgun
No
No
It is an airsoft gun based of the PPSH-41 gun
Depending on the company $90 to $175.
1/4th of the flash hider
Check airsoftmegastore.com
500+
You never need a license to have an Airsoft gun.
No, it is an airsoft gun.
NO