I've had round large round chopping bowls for years, that I use with a rounded chopping blade - I think it's called a mezzaluna.
It's time to buy a new bowl and I can't find them anywhere, for anything near a normal price. The absolute cheapest are about $38 on Amazon, and I'm not even sure this 12 inch size would be large enough.
I also had a large plastic/acrylic one (same material as they use for flat chopping boards) which went MIA during my kitchen renovation. I'm sure I didn't pay much for it.
I guess I'll have to cough up the money, but it seems a little outrageous. This was an item that was available all over, and was not expensive.