$80 each - Montavue MTT4870 cameras. I bought two.... there are 4 left. Also- if you use eBay often, you "might" have a message from eBay to activate 8 or 10 percent eBay Bucks bonus for the next two days. That effectively drops the price to as low as $72 each (just have to wait 3 months for the current Bucks period to end). Montavue 4MP 2K H.265+ HD IP IR Turret Audio Camera MTT4870 | eBay These are OEM Dahua and for worldwide so "should" be able to update the firmware. Most likely with regular Dahua firmware. These are identical spec to Dahua N44BG53. https://us.dahuasecurity.com/wp-con...xedEyeballCamera_N44BG52_N44BG53_v001_005.pdf These are a current model but these are not Starlight sensors... Still an excellent camera for many uses. The Montavue specs show that all of the IVS features are intact so it does not appear as though they have neutered any features out. The firmware on the Montavue site appears to be untouched HX5X3X Rhea firmware (General_IPC-HX5X3X-Rhea_Eng_N_Stream3_V2.622.0000000.18.R.20171110.bin) and looking in the firmware I did not see any transforms between the OEM and real Dahua model numbers like I have found on another OEM brand which is also an excellent sign. Most likely just non-logo official Dahua OEM firmware.