Amcrest NVR NV2108-HS for 8CH upto 4K cameras, no POE ports or HDD (supports 6TB) $59.49

Pretty good deal for a barebones NVR that supports up to 6TB HDD.
NV2108-HS
https://www.amazon.com/Amcrest-NV…B07KZ782ZF
It only has one network port because it connects to the router, not to any of the cameras. The advantage of something like this is you dont need to wire all your cameras to the NVR directly, which is useful for me because some of my cameras connect to switches on one side of the house and other cameras connect to a switch on the other side and floor of the house. Its also easier to use with things like poe injectors/splitters and to troubleshoot when stuff fails.
Anyways, this is in the realm of and cheaper than getting a rasbery pi + the NVR SW and easier for the average joe.