I'm not sure about under $50: you get what you pay for!
However, if they want to stretch the budget a little bit, Pentax SP 8x40 are around $70 (eg: https://www.bhphotov..._binocular.html ), Nikon Aculon aren't much more expensive, especially if you shop around. Olympus 8x40 DPS-I are good value and give good views for the money. I can get them here in Oz for under $US70 (ditto the Aculons). They are called "Troopers" in the US.
Any of these would be good all-rounders, and would last for many years.
I would steer clear of roof-prisms at that price.
Another option would be to check out pawn shops or local e-Bay or similar sites. Lots of binos there.
All the best,
(PS: I have seen/used cheap binos at different times, and they are really a bit of a lottery as to the optics. Some can be fine, others not so much- and it is a real pain if you have to keep sending them back until you get an OK one. They aren't worth even $50 if they can't come to focus properly, fall out of collimation or are stopped down to get better CA or edge control...)
Edited by DeanD, 23 February 2021 - 01:01 AM.