(or w/e built that for you and charged you PREMIUM COSTS, hence the ad)
Nobody charged him premium costs. The post was just an advert of his small business: posted by Marcinprv (where "prv" I guess stands for "first" in polish) and you can find the same name on the advertised website (firstever.eu).
BTW two risers per sata is probably OK; more than 2 is a problem.
It looks pretty nice. And you are right, maybe 2 risers per SATA cable at the PSU is fine. But you have to admit that we enter in a "unknown" territory using molex to sata connectors, bc we cannot ensure the proper quality of the connectors (SATA side). It would be nice that risers were straight SATA to connect direct to PSU. Ok, it's sometimes a bit hard to pinpoint a build "issue" without sounding rude.