I have always been very open that I do no pay the fees of tournaments I run. If anyone has a problem I simply tell them they should try to run their own tournaments and when they do they can decide whether or not to pay entry into something they created. Currently I'm only running local tournaments in the 20-35 person range. I look at it
like this-
-For every tournament I purchase ~$15 worth of stuff out of my own pocket (not venue money, ALL venue money I get goes to the organization I promised it to, except maybe $10 that I give to the 4th place team in doubles and maybe another $5 that I give to someone who helped me here and there during the day). The stuff I buy out of pocket for every tournament is
-10 pens
-2 large poster boards
-1 3-input outlet multiplier (I now have like 10 of these things lol)
-Sharpies (why do these always get lost

)
-Tape
The pens, tape, and sharpies wouldn't be recurring expenses if I could manage not to lose the stuff between events. I've gotten better with the tape/sharpies but pens are stupid for some reason. Regardless, I put my own money into the events and the only thing I get out of it is free entry (maybe free food). Also, the biggest thing a TO puts into a tournament is TIME. It takes time to set up. Time to break down. Time to make a thread, contact a venue, get a deal worked out, get the rules worked out, keep an eye on your thread to answer questions, etc etc. I think the best incentive for a TO who doesn't want to make a profit (me) is simply getting free entry.
At Delta Upsilon III here is how the venue fee stuff worked (IIRC)
There were 25 people who payed the venue fee
-I payed $5 to two people for random help they did for me
-I payed $10 to the 4th place team in doubles
-I took $10 out to buy two 12-packs of soda, which I resold and made the $10 back (no profit)
-I took out $30 for pizza which I resold and made about $15 profit, of which I gave this to the venue since I used the venue money to buy the pizza, not my own personal money)
-The venue received $105 + $15 = $120
Now if I ran tournaments out of my apartment or something that would be money I could keep, and I know a couple TO's who have that situation and they can do that, but for me I don't mind having the money go to the place that is letting me hold the tournament.
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I've built up a nice collection of stuff to:
-~10 3-input 6/9 foot extension cords
-4 surge protectors withe 6-8 inputs each, one cord is 15 feet the rest are about 5-10
-1 extension cord (I need more of these)
-5 converters (allows 2 prong inputs to become 3 prong inputs)
All and all I have the equiptment now to get power to 8-10 setups. This is perfect for 20-35 person events.
AZ, that is interesting, I've all ways payed the entry fee to my own tournaments, but we are typically in the 30-40 range of attendees, and we have a team of 4 guys that cooperate to run these events, so losing that much out of the pot might not fly. However, it also seems (in our community) that players watch the TO's rather closely; I recall a situation in which we were accused of trying to skim money off the top, which we did, and in turn bought a TV and paid for cab rides for some of our organizers. For some reason, the idea that we'd take anything home with us after the tournament was criminal...
I've seen this a lot. Was the money you "skimmed off the top" from the pot or from the venue fee, or do you not have a separate fee for the venue? This should be your first area of concern, if you keep the pot and the venue fee separate you will cut down on the anxiety people will have with money. The venue fee they assume will go to 1 of 3 places
-The venue that is allowing the tournament to happen
-The pocket of the TO as profit
-Money re-invested so the next tournament will have better/more equiptment
I would recommended, if you don't already, that you seperate out the venue fee from the singles/doubles entry fee. That way there is no confusion about the size of the pot.
I would also be up-front and honest with people. Straight up tell them you are taking X amount for Y/Z if you plan to take money out. I would also tell them this before the event (just make a post in your thread).
EDIT: Okay I found your last tournament I think:
http://www.smashboards.com/showthread.php?t=214557
And for this you simply have $10 for singles and $10 for doubles listed. If I read the OP I would assume that money would all go straight to the pot (and not be used for anything else). If you want to keep this same structure and not use a venue fee, then I would suggest doing the percent system. My crew and I used this back in Melee for the BOMB series. Essentially announce in the thread that X% of the pot will be taken as a fee. I would recommend no more then 10%, maybe %15. For the BOMB series we took 10% of the pot and gave it to the church that let us hold the tournament as a donation. The advantage of this system is that you don't make your attendees pay more like may happen if you adopt the $10, $10, venue fee of $1-$5/$10 system.