I have a IPVM subscription (they had a $20/month deal), and its a work expense. They do a lot of work reviewing devices for the industry and from what I have seen are fairly honest. Ill probably save that $20/month a thousand times over in time savings and when dealing with customers... anyway I have read the Axis A8105-E review, honestly it was a bit weak compared to their other reviews and left me with more questions.
Anyway the A8105 seems a bit bulky to me for what it is, but its their first swing at this type of product, and with recently joining N2 well probably see something better as a follow up product next year or so.
There are outputs on the device for tamper alarms, the LED ring around the button is their only light so the low light is weak but for this form factor expected on a fixed iris lens camera. Lots of native support in the professional NVR products out of the box though, and you get what you pay for in Axis hardware... their cameras in the professional world are usually only replaced after the tech is old, rarely from failure. I have some axis 2400 (vga!), that are still running at industrial sites for customers... 15years now at least. Their stuff is tank like but not cheap.
I was interested the door model for SIP functionality for some customers, price point isn't far off from Commend or similar IP solutions, just a cleaner/smaller device than what is available in the professional market.
Personally I was looking to install this at home, my wife wants a ring door bell camera, and I don't want to pay subscription fees and want something I can record on my own NVR not in the cloud with monthly fees. The only thing I haven't figured out is how well the thing works with the axis app as a "ring like" solution, might break down and buy one anyway and sort things out on my own. Dealer costs on these are still high $650/665 I think is my dealer price.
There is a used one on eBay for $400, looks a big banged up but probably good.