Was really more towards Paul's comment than your Adam.
He states flat-out that backed posters bring more and I am just wondering if he is doing an apples to apples comparison.
Sean, I am comparing like for like. An example is the Moonraker Quad that sold several weeks back. It was linen-backed No restoration as it was in excellent condition, made £299.. I knew the buyer, so contacted him to ask why he paid so much for a backed poster. his reply was he prefers them backed, and is willing to pay more for a backed copy. I pointed out he could of had a mint one for about half, but he wasn't interested.
This has been the same with other posters too, remember the backed Zombies Flesh eaters that brought £799!! A quite poor One million years B.C. that was backed brought £850...
I know two prominent U.K. collectors that are getting most there good posters backed, just because they prefer it.
As with everything it's preference, it just seems more people are willing to pay more for a backed poster as time goes on. especially non-collectors who just want the art, so will pay much more for a backed copy. I wouldn't entertain it once over, but I've bought a couple in recent times, as it was a backed one or none at all. If I ever come across an un-backed one I could afford, I may pick it up but at the moment I'm very happy to have these couple that I otherwise wouldn't have.