you can get PDUs for less than $1000 - with the right APC rep you can get a 30A unmetered L6-30 strip for about $300 each.
that said, i still like the breaker-board approach. each device can have an individual breaker and you dont need as many plugs and unnecessary wire runs.
Provided that one gets an APC rep in Russia and/or HongKong .. Not sure where the datacenter is, but the setup is awesome if you have on-site maintenance. It'll be a pain to have someone run there each time a miner needs to be bounced (powered off/on). This is where some high grade PDU's are helping. Else, with the current setup you're way better that any dumb PDU (the individual circuit breakers really help in the long run).