Yes, that's a good point. 2CHF was probably the highest denomination coin I fed it. Perhaps they did me a favour by rejecting them! I'll see if I can ski over to CH on my next ski trip.
The rest of the coins were largely low value. I certainly picked out the €0.50 and above.
Still, I think the commission is fair. The chance to get rid of all that in one go is useful. Commission at 3% for coppers it would be a steal!
I would have expected a bit more fort the 10CHF note, but for that amount I'm not going to go traipsing around