Hiya,
I bought one off ebay from tradepartsexpress, and as you are already aware they're not cheap. The best thing is that they're genuine Seat parts and look the business once fitted. It took about 40 mins to fit and its made my car much more comfy.
The only bad thing was I had to cut a hole in the base of the cupholder for the bracket but once it's fitted I suppose it's there to stay so no big deal unless you intend to remove it at a later date.
The colour match is perfect and there's much more stowage plus they do adjust up or down and can be tilted out of the way, a bit of a pain if you want to use the handbrake a lot but my DSG has park so I rarely bother with mine.
Basically buy a genuine one and you can't go wrong.