The ebay seller that I used a couple of weeks ago for the LUK clutch kit was atp-spareparts
I have had a quick look and it would appears that they are in the £135 delivered price region for a 3 piece LUK clutch kit for the 1.4TDI
This seems to be on a par with other listing on ebay for an LUK clutch kit
When I did my TDI last year I paid £116 delivered for the LUK clutch kit, but I was looking for some days on ebay to get that deal and it didn't include the cross arm or the top hat
The top hat was £9 from Andrew Page, and it has VAG stamped on it
The cross arm was Audi main dealer only and was about £12 from memory, plus the ball ended pivot bolt for it at about £3 and the spring clip at £0.68
Pay particular attention to the ball ended bolt and the wearing surface on the cross arm, mine had worn the ball end off the bolt and right through the cross arm, resulting in release bearing failure
As far as I am aware Audi only ever fitted SACHE or LUK clutches