Aside from what coinlocket$ said, that Enjoy_My_Accounts sell illegal stuffs, I don't see any vioaltions from his actions. Yes ! I admit that what he did is somhow irritating (not ethical) on our eyes but we can't do anything about it, it's his own business. Maybe the least thing we can do is advice him to set schedules for bumping his threads. For me bumping once a day is not necessary, once every 3-5 days works fine.
Probably, you can see a lot of similar services in the
Services Section, I don't see it as illegal as long as they provide the subscription to the buyer, it's fine. It's her/his business, we should check the credibility of his/her service rather than having doubts and questioning someone based on the price.
Bumping a thread is normal especially when someone is having a business, I don't it's considered as spamming, just follow the rule of bumping once per 24 hrs.