Product price: br br Reviews : br br br This product was great overall but be informed up front…According to the seller though there’s NO current ADD-ON camera’s for this model so if you decide later to add 4 cams? go ahead and pay the extra for the 4 cam system! It would be a GREAT savings if you could purchase add-ons for it later down the road? Color wasn’t as beautiful as some of those $30 cams out there but the cams themselves look pretty detailed! haven’t tested the night vision…Overall I liked this system just disappointed with not having the option to upgrade….