How do you know if the rails are Accu-Fast or not? I have an Olhausen, and aside from the snooty corner pockets, it's a good table. This looks like a notch or two higher end than mine, so, assuming it hasn't been abused, it should be as good. I am quite happy with mine until the corner pocket spits out a ball.
Is it worth it? I guess that depends on the price and what else is available in that price range. If it hasn't been abused and is installed correctly, it will play well. Before I bought mine, I called a couple of mechanics and they thought Olhausens are good tables. There are definitely tables that are poorly designed and constructed that they don't like installing.