Woah, $60 is pricey for a spray bar. You can probably make one that looks tons better for $5-$6.
Take a look at Lee's rigid tubing. Usually comes in 36" lengths and in various dimensions. Available at most LFS, Pet Mountain, et al. It's cheap enough that you can pick up several pieces to practice on with a Dremel. And then if you want something fancier, you could always get black PVC or get acrylic tubing.