If its money your after making, wrestling aint the business to be in, unless you have a shed load of cash as an initial investment. Hiring everything in can cost around the 2K mark for something very basic.
Also some actual knowledge in promoting. Anyone can walk around the streets and stick a few posters up, we normally spend a full day and evening postering. (I never thought of actually dropping bundles of flyers in places - thanks for that (even I am still learning)). The thing is when postering you have to look smart and be very polite. There are other tricks that can be used to get posters up in shops. One other thing though, this is something a concert promoter told me, poster factories, and office blocks. Most of them will put a poster up in the canteen.
Adverting is the key to a sucessful show, this is where the expense comes into it. You need at least 1 good sized advert (Not an article) per local paper. If people don't know your show is on, they can not see it. If you can get plugs on radio, tv and papers thats just a bonus.
Finally, we have invested thousands of pounds in wZw and we are not expecting to make a profit for at least 18 months. The first show we hired everything in drew nearly 250 people and lost a lot of money. This is the reality of promoting. Don't expect to fill a 800 seater venue on your first show. It aint gonna happen. Also joe public who buy tickets don't know one British wrestler from an other. (Well very few do, as the market research i did proves).
Anyone can be a promoter, but to make a sucess of it, you need to get £££ signs out of your eyes, be prepared to loose a lot of money. I do it because I enjoy it and its a long term business plan. I went into it green and thought I could sell out, hell 200 posters, 4,000 flyers, radio interview, 9 newspaper adverts, 2 newspaper interviews how could I go wrong, I did and luckilly I had the cash to see me through. If I hads relied on the gate, i would have been in big trouble!!
Just my thoughts and opinions

Gary