Cheap...A Winchester 20-50x50mm spotting scope. Was the best rugged "cheap" little spotter I ever owned. Cost me $100.00 @ The Sportsman Guide.
It is around 9" long, very rugged body, lightweight & takes some good knocks et keeps on ticking. Pretty clear glass & good zoom adjustment. Never fogged up, even when exposed to -40 WC
I used it with a window mount for spotting coyote off on the distant hills. I'd still have/use it, but my eyes grew old, et had to upgrade to more power.