I am not too sure where you can find an ATC 810.
A post above mentioned that Diamond Aviation (SQL, San Carlos) may be a good spot to try. They had advanced sims a few years ago. Not sure about now.

Also, the owner's name is U.J., and he is a business man who is willing to cut deals. So don't pay full price if you go there. Offer him a block amount of money for a few extra hours, and I am sure he will lower the price in exchange for your business.