Yes depending what you can pick up a video camera for on E-bay . I won a Sony TRV37 for just under $100 .

Base cost ( no camo dipped case )

Pelican 1300 case = $37.50
Board for camera = $50 to $70
IR array = $76
Video camera = $125
12V battery $14
MISC. parts $20

Thats $342.50 with the $70 dollar board and a higher price for the video camera than I paid by $25. If you went with a pixcontroller LE board you could knock of $20 from total .

Keep in mind this unit will have much much better night time footage since you are using a better array then they have on their unit . I have test clips that you can see me @ 100 feet at night .

Not to mention it is fun to build them !