At the risk of repeating what several others have said, I don't look to get paid when I DJ. Sometimes I am and that's great but I don't look for it and certainly don't expect it. If I were travelling a great distance it would help but, whatever, it's enough to be asked.
I DJ because I like to and because I want to share my passion and my collection with as many people as possible. I also like to think (perhaps foolishly ) that I can add flair and imagination to the scene with what I play, something that is often sadly lacking. I never buy records just to DJ with and have only ever sold records that I have had two of (around 15 over the years) so I DJ using records I feel passionate about.
Are there any professional NS DJ's? Surely not. The small scale of the scene wouldn't cover that methinks. I guess we are all amatuers but let's not make the mistake of thinking that professional is better. To do something for the money often means that the focus changes and moves away from any purity that was there. Of course payment means a greater level of control but do we really want that? A DJ should play what he wants and will usually do better if left alone.
The issue that anyone seeking regular payment has is that there are literally hundreds of wannabe DJ's out there, usually specialising in boots, re-issues etc. Many of these are "returnees" who are so desperate to DJ they will do almost anything (I have heard tell of one guy "on the verge of tears" just to secure a 1 hour spot ). A poor promoter may not want the same level of OVO/rare sounds exposure and so the he just cycles these guys round, often with disastrous results.
I think most of us would be happy with free entry and a beer, I know I am!
Cheers,
John