it’s €73 instead of €128.

you can replace the 17 power supplies with a server PSU… these should all be 12v DC input with a standard 2.1x5.5MM barrel connectors…

flip them up onto their face, with the rear facing up. if you want to get fancy you could even make a base that integrates a little wedge and rod for the power button.

get at least a 24 port switch and micro ethernet cables.

this could be cleaned up to a single row on one shelf with no visible wires other than the ethernet and power lead running up and to the back. 1 switch under the machines… 1 PSU instead of 17… even one power cord…

or a little cable management at the very least…

if you’re going to buy a no name switch, at least get a better one… https://www.amazon.com/TEROW-2-5G-POE-Multi-Speed-Compatible/dp/B0CGDF35P1