Hi,
just had a quick read of the airgun world buyers guide says £268 for the rifle in mossy oak camo, the silencer comes with it, add up the cost of the extras & it sounds reasonable to me, it does give a weight of 7.5lbs which is quite heavy, a BSA XL in the same price range is 1lb lighter.
GAC sell's fishing tackle at good prices I always used to pop in & stock up when I was visiting Glasgow.
steve