I would pay that on a special occasion, but not on an average stay. One reason why I try to keep top tier status on 1 or 2 hotel chains, is that I often get such breakfast deals for free.

European hotels often have pretty pricey meals. I recall a stay at the AMS Hilton 5 years ago, where I was supposed to get breakfast, but weeks later was charged for it. I think that was in the range of $40, and it was nice, but nothing I'd normally think that was worth more than $20. With the strong Euro, and 5 years going by, it's probably $60 now.