You don't state what Amps you need, so will guess 3 = 45A total. Here's 60A for 28-bucks, cut the ends off the wall-warts for cables or buy a bunch of cables. These power supplies are adjustable over a small range so the idiot-idea of 5.2vdc the Pi requires an be accommodated.

https://www.amazon.com/ALITOVE-Transformer-Converter-Security-Computer/dp/B06XK3X3PW/