The diagram above show the minimum needed for any mains PSU. We need a On/Off switch and a fuse. This can be purchased as a single unit. The 2nd is the PSU itself that is available in numbers on the net in nice modules.
A 12V/10A module cost < 10.- USD and they can be connected to create more current or higher voltages. Using 5 modules you can create 60V/10A at a cost of < 50.- USD. Using multiple modules like this can save some cost, but it usually require more space. As illustrated in an earlier entry the Driver stage is actually more expensive than the DPS5020.
Please check the regulations of your country before connecting anything to the mains.