If you're just looking for something quick and cheap then Academy may be the way to go. Then you can replace it with a set you build yourself as you have time.
There is a little shop on Oak Forest just north of 34th st that has them hanging in the window and a sign for custom washer boards. Try there. Don't know what it's called or an address, just happened to drive by it the other day. It's right by that big marine repair shop.