This year, we will spend about $40-$50 per nieces/nephews (just a few of them), $50 on each other, $0 for siblings (glad we finally were able to put the kibosh on presents for siblings, such a pointless exercise! We're all adults, I can buy the crap I need and/or want, thank you!), $0 to $25 on my parents, $50 to $100 combined on FIL/MIL, about $60 for a nice Fraser fir tree, about $60 for an annual Christmas event for the two of us (Christmas concert or a play like The Christmas Carol), $50 for gas for travel to parents, $250 for dog boarding while traveling to parents, and probably $50 in added groceries for buying more decadent holiday food and baking supplies. Gasoline, dog boarding, and added groceries I don't really count as holiday spending per se, although I guess I should.
Some years, we'll spend more if airfare and longer dog boarding is needed to visit MIL/FIL. Or, every now and again my siblings and I go in on a larger gift for the parents that might cost me $100 or so. Last year, I think I spent $350 on my wife because I was feeling festive.
So, add it all up and it is quite a bit of money but I ain't gonna worry about it. 'Tis the season, and what not. Spend what seems right at the moment and enjoy.