Re: Has anybody in the past payed to get a number plate in Zürich?
Plates are 20CHF a piece, so 40 CHF for the set. That is ZH prices, regardless of format and size. So 20 CHF flat fee, either for front or rear, long or high format, car or motorcycle.
The site you linked to in the OP is for the "nice" numbers that are auctioned off.
Just go to the STVA and register the change of canton and they will do everything. You might also be charged an extra 20 for the new grey card...