Wow... They quoted my 520 EUR (including tax) for the part. Plus the replacement costs. I don't know... You can buy a whole working car for this money in Lithuania.
Isn't it best to try to scrape off the excess gunk and refit but with superglue or similar?
I noticed when mine came off a few weeks ago even though the electronic switch seems to be hanging down, once the cover's removed when you put it back it kinda fits back into place and operates as normal.
I'd try that first and see how it goes before forking out that extravagent sum for a replacement part.