Thanks for all your replies much appreciated, I know I've been had, the seller claims he couldn't have done any more to show the extent of the damage!!! Which annoys me a bit, but I'm more annoyed with myself for buying it in the first place (lesson learnt).
If his eBay pictures had detailed sharp close ups of the (Damage) scratches and marks, myself and ten others certainly wouldn't have bothered bidding. Instead he chose to show blurred images on a bright background and write a vague "Some roughness" none detailed description.
He hasn't seen my sharper detailed pictures yet, but it looks like I'll be going up the Resolution Centre road.
At least I've found a great glass forum. Thanks for the advice again