"WyoFree"......You can spend from $40.00 to $400.00 on a dash cam. You need to decide what features YOU want and are willing to pay for.
You can buy one that just video tapes and rewrites over the old footage after a certain time. You can buy one that adds GPS to the signature, verifying where an incident occurred. You can buy one that sense an impact and saves that portion of the recording.
Lastly, you can buy one that films in poor quality video, up to HD video.
I felt that if I was going to buy a dash cam, I wanted one that filmed in HD, so while driving through a National Park, I could save a high quality video of the drive. I bought a larger SD card so mine would record for 8 hours before writing over the older video.
I wanted a GPS unit that identified where I was at and what speed I was going when/if an accident occurred.
So.....you need to decide what things are important to you. Each item boosts the cost. I bought a DOD brand and it fits nicely in the lower left corner of my windshield. I ran the power cable into the side of the dash and to a keyed power source. I bought a spare cable that I mounted in my daily driver. I move the camera when not camping.
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor