And admission should be about $10.00 to get in. The ONLY way it will be more is if the one-day insurance fee and the (unionized) security guards I need to pay for the day end up costing me too much.
If it is more, it will be either $2 or $5 more. CND - so that saves you Americans some money right there! 
Re-reading this, I realized I didn't finish explaining this:
The insurance company won't draw up anything unless it's within 2 weeks of the date it's issued for. That's why I don't know the costs for that. They don't even have a rough price for me because there are certain things to be done with it pertaining to the Convention Centre.
The Convention Centre is unionized - which means I HAVE to pay their workers to do some items for us - and I can't get a solid price on them yet. I know Security will cost me $16.00 per hour, but don't know if I HAVE to have 1 or 3 guards yet.
There's other cost factors that I'm still working on with this as well. True, with 6 years of this under my belt, I do have a hold on how to do this easy enough - but with the continuing growth of the event, the guests that we're still trying to secure, and some "surprise" costs that weren't expected, a final admission price isn't set yet and things always change.
So while the plan has been to have admission be $10.00, the additional costs (approx $1200-5000) DOES play a factor into what admission will be.
Rule of thumb, if you think you're only going to need $200 for the day, bring $250.
Plan for a $15.00 admission, but I'm trying to ensure that it will stay at $10.00
Worst case scenario - you'll save $5.00 if it turns out it's $10.00. :-)