$20 for the standard test and another $10 if you want a TBN test, which basically tells you how much longer you can run your oil. They'll send you the kits for free if you go to their website.
My oil was Petro-Canada Maximum 5W30. Standard stuff that you might get from a dealer. Filter was a Purolator. With the new strict specs, I think all oils are pretty good these days.
They said the same about mine; silicon being above average. I have a stock Toyota filter as well... It probably had about 18-20k miles on it when that last sample was sent in and it still looks very clean; I don't drive in a very dusty environment.