My DH bike frame cost me about £800 new, but it was NOS and cost me less than 1/2 RRP!
My Maverick I bought 2nd hand in immaculate condition for £800 too. Good deal at the time considering the original owner paid the thick end of £2500 for it (this was pre Maverick frames dropping significantly in price).
Bought a new S Works Enduro frame in 2002/3 for £900 which was RRP, rode it for a year then sold for £650 which wasn’t bad.
Most I’ve spent on a HT frame was £450 on a new ti Airborne from the Halfords sale a few years ago. Built it up, rode it a few times, decided it wasn’t for me and sold it for the same I bought it for.
Much as I LOVE nice and expensive bikes, I cannot justify buying something that’s going to lose a ridiculous amount of money in depreciation if you buy it new. A few hundred quid over a year, fair enough, but a frame that’s going to lose £1k or more in the space of a year, even if I’ve got money (which I don’t right now anyway) it’s unjustifiable personally. There’s way too much good stuff on the 2nd hand market usually to worry about buying new 😉