Our 5ft tree cost €12.50 in 2006, still going strong. We were poor as church mice, shared a chocolate advent between us (just DH and I), and I handmade tree decs out of felt.
It now has 150 lights on it and a collection of more felt decs and stuff from our travels, quite a mish mash.
We don't do Xmas eve boxes, EOTS, wonderlands, light shows, panto, Santa breakfasts, polar express trips etc, nothing on the run up except DS' school play.
We've spent about €300 between gifts and food.
But, we've seen friends, played boardgames, watched Muppets (twice!), built Lego, had a sleepover, ate nice food.
So, spend what you want/can and sod what other people do.