a lot
a Royal oak, some Panerai, some Rolex, ... But I don't regret it
I bought the Patek secondhand. I couldn't get it from an AD because they're very, very hard to get.
I had to pay over list but I don't care. Years ago I bought a Rolex Daytona it was also over listprice but when I sold it months ago I also received more than the listprice