You could also try a supply house like Mouser, which carries a lot of different products. Type in Mouser and linear power supply. You'll be taken to a page where you put in certain parameters, like output voltage. There seem to be an array of products. Obviously, you want one they have in stock. I've bought parts through them- fast shipping and not overpriced. There are also high quality lab grade ones, used, but that's probably overkill.
Depending on application, some of these supplies are, at least according to audiophile designers, not robust enough to power a computer run as a server. The audiophile versions can be expensive. If it is not a critical application, one shortcut is to look for a bench supply with a large toroidal- I found one, a little more money than your budget, with three channels of output, two with variable voltage and current. I can post an article about it- got it through Amazon, and though it looks virtually identical to another brand, it was better build. I use it to power a small DSP and a couple other non-critical units to eliminate the switching supplies.
Depending on application, some of these supplies are, at least according to audiophile designers, not robust enough to power a computer run as a server. The audiophile versions can be expensive. If it is not a critical application, one shortcut is to look for a bench supply with a large toroidal- I found one, a little more money than your budget, with three channels of output, two with variable voltage and current. I can post an article about it- got it through Amazon, and though it looks virtually identical to another brand, it was better build. I use it to power a small DSP and a couple other non-critical units to eliminate the switching supplies.