OK, What do you recomend?
I looked for my receipt for the one I have, (hardwired), no find. The guy I bought it from is all he sells. I think I did a Google search at the time. I will keep looking because I save all my receipts. I have had mine for a couple of years and it works great. Has night vision, sound and a black and white monitor. Spent around 150 bucks.
They have them on ebay all the time. Other vendors also have them from black and white to color screens.
My 2 cents