I bought my ticket about an hour after the presale opened. It looked like there was pretty strong interest because the lower rows in most of the sections were pretty well sold before I picked my seat.
And the prices were a lot lower than the Skate America prices. I paid $317.50 (Canadian dollars I presume but I am not sure) for a row 2 seat and the row 2 seat for Skate America was $600. Even with a possible gala included that seems like highway robbery.