(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.
Two risers per sata is ok IF using sata powered risers, the main issue is the sata-molex adapters that ship with the risers crap out and melt.