For $250-$275 you can build a top of the line 4mp digital unit with a sony camera.You will have about 10 different delays,movie mode,day or night or both and since you built it yourself you saved lots of money and the wife should let you build a 2nd or 3rd.Start looking around at these sites.
www.jesseshunting.com
www.pixcontroller.com
www.hagshouse.com