It looks like a reasonable deal, but of course they don't actually mention the projector model or type of screen, they just show a few pictures of the 4805. The 4805 plus the bottom of the line Draper screen is still a reasonable value for the price.
I would hesitate entirely based on the customer service that may be offered to you by Shop At Home vs. a projector e-tailer. A company like
www.visualapex.com will back up whatever they sell you with a good return policy and they honor the warranties of projectors they sell. On the other hand, the projector may be fine, pull down screens are cheap and subject to wrinkles, but for such a good price, you can get a really good screen later if you want.
Check:
http://www.projectorcentral.com/infocus_screenplay_4805.htm
and read other reviews at
www.projectorcentral.com before you make any final decisions.