HOW MUCH YOU NEED TO EXPECT YOU'LL PAY FOR A GOOD 4-LAYER HIGH POWER GOLDFINGER POWER SUPPLY PCB

Note that, Because you placed power on an inside layer, that doesn’t signify you may’t put power elsewhere. You are able to however route power on the other signal layers as rails applying copper pour, or as thick traces.---What exactly are the colour selections for PCB solder mask? Eco-friendly, black, blue, pink&com