Tipping in a tournament

[lrfsandpiper]

Hi All -
I have a question about live games at a lot of these charity poker events (tournaments and sit and go's) that are everywhere these days. How much should you tip the dealer? I think 10% is a good tip for a $100 dollar buy or less should be standard.............ARE there standards??

I deal.....and have had people win $1800 bucks walk away without so much as a glance back...............even before I dealt I tipped 10% when I finished in the money.....
Thanks.