I can buy the same exact Minsen S-600-48 power supply for well under $100 delivered, and an adjustable 3 A DC-DC converter for a few bucks; ditto for the voltmeter, and pennies for the connector strip. How am I
not saving money?
Don't get me wrong, I don't object to importing items from China, marking them up, and selling them. Sometimes I'm willing to pay extra to get something in two days rather than two weeks or two months, or to get one when the Chinese sell only boxes of ten, or for the fact that you've invested time and money in finding a supplier of decent quality stuff, and are presumably offering some form of local warranty and support. Just don't tell me the price is EXCELLENT -- when I see that, I always assume I'm having the wool pulled over my eyes, and I go
verify.
I use a DC-DC converter in my setup too. I don't know about other people, but I don't decide to run my electronics at different voltages every day. I don't get out of bed every morning with an urge to "instigate a change" in the supply voltage of my stuff. I set my converter once (to 12 V, to power some fans and another device), and haven't touched it since. It seems very unlikely that anyone will need to adjust that voltage often enough to justify a permanently connected voltmeter, and on the rare occasions they do, having to use a multimeter is hardly a chore. Hence, my assertion that the voltmeter was redundant.
I don't care too much about what my PSU looks like. I care about the inconvenience of it having an awkward shape, with the converter tacked on, making it more difficult to house. I was wrong about that point, though -- I had missed the part where it was attached with magnets. Not that I approve of securing electrical stuff by magnets alone, but my concern about being stuck with the awkward shape was unfounded. So I take that back.