The thing is it really depends on how old the child is, a 15 year old is entirely different to a 5 year old.
What you count as presents, some parents will buy like toiletries and socks and pus and stuff as Christmas presents whilst others might just get their children that
Whether DC need anything big that year that you can get as a present, poster above getting a flute for example, or nice sports equipment.
I think as long as you spend what you can afford, you're not excessive so filling up a room with presents it doesn't matter. Spend what you want and what you can.
When I was younger my parents probably spent about 80ish in todays money on me, I got one biggish present and a couple of little presents, books and socks type stuff and a stocking. My best friend got literally hundreds of presents, must have come to nearly a 1000 looking back, and her parents were probably similar levels of wealth to mine, crazy levels of spending. I never felt hard done by compared to her, I just remember thinking how on earth could she enjoy all of that. I was equally happy with my presents.
I don't think children realise the value of money, I never really thought her parents spent more on her than mine I just knew that she had masses of presents that tbh I didn't want, because i was happy with my one much coveted toy. But she was happy with her Christmas too, we both got what we wanted. I wouldn't feel guilty if I didn't spend as much as others because I honestly think children appreciate a couple of presents just as much as 100s. Christmas is exciting because it's Christmas and it doesn't matter how much money is spent, it is magical because it feels magical not because you get hundreds of presents.