No, that's about what ZF boxes go for. Expect to pay $1500-$1800 for a complete conversion kit for a ZF box, that includes the flywheel, clutch, pedals, linkages etc. or at least $700 - $800 for the box on it's own, that's about where the market price is.
Getrag boxes are cheaper but not as strong. Having said that, I had a Getrag 220 box in my E36 328i that I punished severely, and it never failed on me. So if you want to save $$$ now, you'll have to go Getrag. If you want to potentially save bigger $$$ later on, spend more now on a ZF setup.