I'm very happy with the new dash, and it was definitely money well spent.
The odometer has about 207000 k's on it. It's in mint condition, and without any scratches on the glass. These two things themselves have no impact on the price, as it was set. Same goes for the standard XF gauages, which had a set price of $50, regardless of mileage and condition.
As for installation, it was a piece of cake. The black surround has to be removed (not hard to do), and in my case, i also had to remove the plastic cover underneath the dash (where the fuses are). The cluster itself is held on by only 4 screws (2 top 2 bottom), and connected to 2 wiring looms/blocks.
All in all, abuot 15mins of work - and worth every penny!