By popular request, I did a review and teardown of a FNIRSI 1014D digital storage oscilloscope. You can also find the exact same scope under the Yeapook brand (ADS1014D). Although it is advertised as a 100MHz bandwidth scope, in reality the bandwidth is just at around 30MHz. This along with other issues (e.g. low memory depth, low input sensitivity, display artifacts, etc.) makes it hard to justify getting this scope even with the rock bottom price.

00:00 Introduction
02:45 Functional testing
06:10 Bandwidth measurements
11:31 Rise time testing
12:17 AM/FM modulation, Lissajous figure
13:11 Builtin function generator
14:49 Teardown
16:25 Conclusions