I would say we are moderate spenders at Christmas, there has been a year or two when we have stuck most of it on the credit card and I didn't like having to deal with that in January, such a comedown from the excitement of xmas. Now I start setting aside money from July (£100 per month this year) - will have £600 total saved this year.
We will be spending £120 on each DC - DD is getting a new bike (desperately needs one too!) which I've found for £80. Then other bits like xmas day outfit, a DVD, couple of books etc - reached budget really quickly with DD this year due to the cost of the bike. DS will be getting a buzz and woody, a new scooter, 4 pairs of nice trousers, xmas day outfit, DVD, jigsaw, other bits.
DH and I will be spending £40 on each other (most years we don't get each other anything). We don't buy for adults except for parents, the kids (friends kids and neices/nephews) get £10-15 spent on them.
We don't really over-indulge food wise either, still going round to my parents for xmas dinner as we have done for the last 7yrs
and generally treat ourselves to a big box of celebrations or something and a bottle of baileys for me, Jack Daniels for DH and that just gets lumped in with the food shopping one week.
Sometimes I would love to spend more on the DCs but they are always happy with what they get and get plenty off other people and we get to see all the family at xmas which is the main thing I suppose. They don't get lots of treats through the year, they do get clothes when they need them though and the odd toy (or they buy stuff with spending money) and DD does dancing and swimming, DS will eventually do swimming and dancing (or whatever) when he gets old enough too. Birthday pressies are generally half the price of what we spend on them at xmas.