Oprah,

They are called Ice Cap ballast and I run 2-430 models to drive 2' T5s to 40watts. More important you double the lumens out.
While they may seem expensive to you, you don't need to buy a fixture, just the ballast and end caps and make your own set-up.
Plus you can run cheap wally world fluro's and drive them to VHO levels!

oldmac