Oh yeah, didn't even think about links. The monitors are available at
http://www.partsexpress.com These guys are the best. I have bought from them for years and they have some of the best prices on stuff that is hard to find.
The camera was purchased from
http://www.spylinker.com and I don't know that running 4 cameras with this hardware is possible. The guy sez 2 is no problem but that remains to be seen. I can say for a single camera solution, this will work well.