Yup. The exclusively single-decker trains east of Chicago was kind of a surprise to me, but the double decker Superliner cars have a sleeper model. Predictably, it's two levels of sleeper rooms and roomettes.

Looking at two weeks out ALB->SEA (if we were to do that again), sleeper more than doubles the price from $606 (for two people, so $303 each) to $1224.

I don't remember the exact numbers from when we were looking, but we had been considering that for at least part of the trip.