It appears that the bargains in watts all require some additional wiring, etc. which has been mostly removed from the allowable solutions. Something like 4 or 5 separate supplies at $35 each in their own boxes with meters, knobs, line cords, not dangling lumps on cords like laptop chargers. DC will do it for lighting, some accessories, etc.
I don't do it that way, but my method requires wiring and so forth. A ZW-R, with PSX-1AC breakers mounted on a board and Ebay AC to DC switching supplies with Ebay Volt-Amp digital meters mounted on panels.
When I see these 0-30 VDC 3 Amp boxes on Ebay with free shipping...I get tempted...so simple.