I'd say that nowadays a good dj earns around L$ 1 000 in tips per hour set, knowing that it depends where and at which time he/she performs. Can be much higher especially for live singers or musicians if paid directly by a land owner or club (some even in real money), knowing that it stays at a so little amount compared to real life that it is still interesting for some people to hire on SL. For the others let's say a few hundred L$. Good hosts are quite in the same level (and many others are "starving"). Anyway for most djs (and especially hosts) consider that it is first for their own passion and to pay the SL bill, may it be renting or clothing. On the other side also consider that most clubs owners spend time losing money and really do that by passion, knowing here again that on SL that passion is low cost compared to RL ... And you forgot one population making money on djs = "agents" ... and they make money setting up agendas and events. PS: Keep in mind that tips are much smaller than they were 10 years ago and really good djs or musicians are not so numerous ... being a good SL club (good selection / friendly place) or good dj (with a real musical culture) is not just doing Youtube bis or a radio.
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