Depends on what type of revolver you're looking for. You can buy a spring revolver for £24.99. On the other hand, if you are looking for something a bit more substantial and for serious use you can always buy a gas or co2 version one for £55 or £60 (see related links). It may not be in stock currently however.
The Crosman 357W is a pellet pistol not an Airsoft pistol.
yes you can search utg revolver they come in many different lengths (the 8 inch is the coolist)
try crw-airsoft
No, they can not, do not attempt to mix real ammunition in airsoft guns.
yes
Depends on what your gametype or preference is. If you like the look of a co2 revolver for target practice then buy it. If your using a automatic pistol for cqb or a sidearm then get that.
I have never seen nor heard of a revolver airsoft pistol with non reusable shells. You should have no problems reusing them.
not really asia is your best bet
no
They are allowed.
You have to take it apart
No.