how much are you wanting for the whole rig?
He wants £600 but open to offers
Using brand new parts, i can build that rig for under £500 - i think you're expecting a bit much @ £600 as @ second hand prices it should be under £400 :S
you might make more money spliting it and selling it all on ebay
the 'mount' appears to be a removable motherboard tray from an old ATX case
The parts are all good as new, the rig has hardly been used but I appreciate where you're coming from, I'll have a talk to my brother tonight and see if he would split it (I had asked previously but he didnt seem keen on the idea)
Would you be interested in any of the parts?