As far as I've ever found, nobody makes 10-footers as a standard production item any longer. If you don't want to pay the price of a specially built new one (and it will be expensive), then you need to find a used one. That's not particularly difficult, though prices will vary all over the place, depending on whether it's restored or not. The Brunswick Anniversary model is relatively easy to find in the 10-foot length, and I think Centennial's can be found in that length, though I'm not certain. Earlier models exist and are reasonably common. For example, there's a very interesting one on Ebay for $1500, item 7218016532, and another for $6000, item 7216350968.