Currently I carry a small 2.5×17.5 “russian spy” monocular, which (surprisingly for its price) has excellent optical quality and is easy to focus for both close and far ranges.

But I want a similar sized monocular with larger magnification, 6x or 8x would be great.
There once was the ATN GoldenEye 8x but it’s no longer available. There’s also the Docter 8×21, but it’s way too expensive for me.

So I’m looking for something of the size of these monoculars.
(But not a cheap imitation of the Docter 8×21, I have one [of the Nikula brand] and it’s total crap. It doesn’t give any more detail than the 2.5×17.5).

Is there anything like this out there?
Price range – less than 30$ if possible, I can maybe stretch it to 50$ if it’s good quality.