Regarding his "salary" however, being that he opened the pool as zero fee, I had just assumed that this was his hobby and his time was his contribution to his hobby. He might consider stating to his clients that this is no longer the case and he's now running a strictly "for profit" business here. Or has he already and I'm just unaware?
Ozcoin Pooled Mining Pty Ltd
That has been there as long as I can remember. A private limited corporation. That doesn't mean non-profit, doesn't mean hobby.
I understand where you are coming from; that based on a price comparison, Oczo is only middle of the pack. You can find cheaper pools. However, Ozco probably did a similar survey before setting their price, and decided on 3%. The reasons for that 3% or the previous 0% are really irrelevant to users. They gave plenty of notice of the fee, and seems to have been more than fair.
Your comments of them running at 0% or credit card companies offering teaser rates are irrelevant. If you feel so strongly against such promotions, you may chose not to partake.