I used to have a very long list but sadly most of them have passed away now (ironically we could afford much nicer gifts now). We used to buy for parents, grandparents, great aunt, brother and family, SIL and family and single BIL, older family friends (my mother’s godmother so really like family). We spent very little , 10 to 20 pounds each, as we couldn’t afford more, but we always tried really hard to find something they would like.
Now we have DS (13) about 300 to 500 euro depending on what he wants. It is a lot but he has no other presents apart from SIL and one friend of mine, and doesn’t really have anything else through the year apart from his birthday.
DH - depends on what I find! Usually around 200 euro.
DSIL- around 40-50 pounds, same amount for DBIL and two adult nephews. It varies though, I don’t have a set budget, rather an upper limit and will spend more if I find something I think they would like. DSIL doesn’t get any presents apart from us, so would never drop her and the family, even though we probably could.
Single BIL about 40 pounds as well.
One friend- about 30 euro, box of chocolates and a book usually.
Other friend - presents for her, her DH and her daughter and family, about 100 euro.
I think in your situation you are buying far too many, especially for DHs family. My mother bought presents for my cousins and their children for years, I am sure they appreciated the thought but they really wouldn’t have been bothered had they not received anything. They were meaningless really, a bottle of cheapish wine for example. Individually cheap but all added up it came to a lot. I’m not sure why but she just couldn’t stop. My Dad used to say to me how silly it was. Their Mum and Dad (my Aunt and Uncle) didn’t buy us anything once we were adults which was fine with me.
I think I would have a good look at who you are buying for and whether you really need to. If you can organise a secret Santa thing for the adults I am sure that would be better, and the others would probably appreciate it. Some people you may continue with (e.g. your Aunt on her own). I think I would ask myself is it meaningful to them to get s present from me? Your single Aunt perhaps it would be meaningful, your SIL who never gives you anything maybe not so much.