As said, if you have a bit of time and the cash, there are some bargains to be had. This autumn after years on a stinky, decided I wanted a proper downhill bike. I started looking in September, made a few low ball offers on some nice bikes, some of which almost came off (Blinged out, one summer old TLD Demo for £2200). Eventually I got pretty much exactly what I wanted (almost brand new supreme operator with ti888s and a Ti sprung rocco for £1500) Just keep looking on pink bike and ride io, be a bit cheeky and you will deffo get a bargain.
There is usually some cheapish demos and scalps being offered and from time to time a proper bargain on a less well known euro brand (some guy was asking £900 for a year old solid mission). Also look at the less trendy, brands like kona as the operator is a great bike.