Oh, boy... As I was writing with my phone, I though mentioning that I know it's not cheap making small patches, would have been enough...
But it clearly wasn't.
It's wonderful, that there is an option like this now and I completely understand, what it takes to produce such a thing. I'm not an designer myself, but I have been an service technician my whole life (Nokia Display Products, Nokia Mobile phones etc.etc.)
Many people are ready to pay money for a clean and easy to use product. And because of the things you mentioned (and the small patches, as I said earlier), the way you did it is of course much more sensible cost wise for you.
So don't take it personally, if it came out like that, that wasn't the point I wanted to make.
I just wanted to say, that for people who are ready to open their systems and tinker with it themselves, there are cheaper ways by using some mass produced cheap PSU's. It surely isn't for everyone, that's granted...
I hope that this explanation eased the pain my earlier post has seem to have caused?