one 5 minutes depends more on what type of event it is rather then how big it is.
If it is for a school-students, young football teams etc(stuff that is only for ppls fun and entertaintment) I usually go about 140 usdollar, if it is close to it, if I have to spend more than 3-4 hours on going there, getting ready, travel all included I take a bit more....perhaps 200usdollar
if it is for a company it can mean that I actually gain their money a little, and i therefor I want more... when ive done those I take about 2-300 more..
I think im too cheap to book now tho, so I think I will take more and push the price quite a bit.