The moral of this story is clearly that you should always come onto AF-UK and discuss any potential purchases before actually coughing up the money. As has been said, there are numerous threads which cover what wankers justbolloxguns are, and there's a few that are all pretty similar with "bbguns" in the url - there's also SAS Special Airsoft Supplies iirc who are complete rip off merchants.
There isn't another jbbg thread active right now, so i think it best to leave this one up in General Discussion where it's more likely to be seen by any noobs contemplating buying from them.