Yeah that's them, uses infared for night light.
I dont mean you have to go that model exactly but there are quite few decent units on the market now which are far cheaper and just as good (if not better in some cases) over the blackvue series.
Anyway as much as id like to help with prices im not around as of sunday but ill pm you details @Rab and you can work it out with the guys keen
Edit - both contacts have blackvue as well if you decide to go tht route too :D