Hi Robert, not sure of the costs in Switzerland! Uk prices average at £450 for the fitted kit with flash update. not something you can do yourself I am sorry to say.
If you were in the UK I would say look for a second life MK3 screen at a good price and sell your MK1. might come out the same cost but you will be getting an updated contrast ratio screen on the MK3 and hopefully less running time.
This is only my opinion of course.
Kind regards
Jonnie