I have 3 kids, and they get between 10-15 gifts each, with one of those being expensive. (Well, that is a relative term, but 'expensive' to us)
This year, they are getting a go-cart (to share) and portable dvd players, so they will be getting two 'expensive' gifts, and so they may not get as many smaller gifts.
When they get older, it's hard to do massive amounts of quanity...