I have a SMARTboard in my classroom. It is 48 inches and cost just under $800.00 without wheels. The bigger one was $1200.00 without wheels. Mine is wall mounted.
The janitor and tech guy put it on the wall. That wasn't hard to do. My LCD projector was just under $700.00. I already had a laptop. My LCD projector will be ceiling mounted next year! I can't wait for that. I LOVE my SMARTboard.