The aliexpress price for me on that one is $61.75, so if you sold them with price mid-high $60's, I don't see the problem.. it's not that much more expensive, and its better to buy from you than some random aliexpress store...
Thanks for the vote of confidence
If there's enough interest on this PSU I may very well stock some and start selling. At least these are not as heavy as linear PSU's so shipping would not be as troublesome and costly.
I had a few minutes (literally) earlier today at the shop to open it up and take just a few pictures. The Aliexpress link above (not mine) has a lot of exterior pictures so I only took a few of the innards. Didn't really have time to disassemble it any further for more pictures (and the front panel digital board doesn't look very interesting anyway).
Click on the images for full resolution.
When I first got it some time ago I tested the output on/off performance to see if there was any overshoot/spike and there was none. I may post some waveforms later when I get a chance.
It's small and light and very portable which makes it very handy when I need to do some quick tests away from my main bench. A few notes about it:
1. The output terminals are at the back, which is not a big deal as it's so small and portable.
2. The output terminals do not have the standard 19mm spacing between them. They are floating by the way. The negative terminal is not connected to mains earth.
3. The current reading has an offset of about 15-20mA. Don't expect it to be a precision PSU