Hi Grantray, No we purchased the 3/4" pre-veneered walnut from Austin Hardwoods when I was down in OC. But... I would't definitely not recommend pre-veneered wood after having gone through ti with two pairs. It leaves no margin for error, and we had some domestic and Chinese sheets mixed and one of the chinese sheets was delaminating on us we had to get more and then I still had a pre-cut panel start to separate and use hide glue and clamps etc.
I'd do 3/4 Baltic Birch and just veneer after you are happy with everything. I think it's worth it.