simgirl, I think whoever wrote the article you read, must have been writing it from an extremely biased point of view. That's not the average. $20 is an extreme price.
We haven't dealt with it yet... DD is having classmates who've lost teeth, but she hasn't yet. We did purchase a special limited edition "toothfairy quarter" to give DD for her 1st tooth lost. (see it here: Tooth Fairy Coin
But after that, we will settle on a fixed amount per tooth. Probably $1 per tooth, unless we're teaching her how to divide her earnings to save, give and spend... Then it will be a little more.
Keep in mind, consistency is key. I remember as a child, I got $1 per tooth. But when I was 7, I had a bunch of adult teeth coming in but the childhood teeth hadn't budged. The dentist had to pull 6 to make room. I was good at math, and eagerly awaited $6 for all the horror of having 6 teeth pulled without freezing or laughing gas. I was still awake when my mom snuck in, and put a piece of tissue under my pillow containing a few quarters, dimes and pennies. So, the whole toothfairy thing got ruined for me, and I felt totally ripped off. Especially since I had to feel the pain of the teeth pulling on top of it all. LOL.
So, whatever you give your child per tooth - make sure you can afford it if you multiply it per tooth. LOL.
Braziliangirl - you may be interested in a book I have. It's a children's book about toothfairy customs around the world... it's called "Throw Your Tooth on the Roof: Tooth Traditions from Around the World" - written by Selby B Beeler. Link to Children's Tooth Book
It's explains the things that children do with their teeth in several countries of the world, and it's so neat. DD's kindergarten class loved reading it after one of their classmates lost his first tooth.