Alternatives? Plenty! Cheaper? Oh yea. Many are less than half that price. Are they as good and as complete? I don't know.
Some names
Holley
Fast
MassFlow
Maybe a dozen more.
There is a thread right in this section that the fellow asked us to take a look at a video they did on a very interesting system. Look around and do some searches. You should find some interesting stuff.
Here is a link
http://clubcobra.com/forums/showthread.php?t=102525