That ebay price is as good as you're going to find, at least it was a few months ago when I bought mine. Spinnaker is right, you cannot have the dual mass flywheel resurfaced. You can clean it up with a palm sander / die grinder and several abrasive discs (like I did, only 38k miles on it though). There is a procedure to check if your flywheel is within spec, it measures the deflection between the two metal sections.
"Can the DMF be twisted by approx. 15 mm to both the left and the right, and does it then return to approximately its initial position?" -- then the flywheel is good.
"Can the DMF be twisted beyond the dimension stated above (excessive turn) without a noticeable increase in the spring force?" or "Is the DMF fixed (can not be twisted)?" -- then the flywheel is bad.
Hope this helps....
