Alex, I have a night vision unit which I bought from ALDI a few years ago.
I paid $149 but I don't think they're available anymore.
For the money, it's a fantastic little unit.
Here's a look at the unit (not the best review but you get the idea)
https://www.youtube.com/watch?v=A-DYc83NSkk&t=1s
I did a search and found this:
Anaconda has a similar unit for $249 but I don't know how good these ones are.
Hope this helps.
RB