"My DD is only 2,but I'm dreading school - around here there's average of 25 kids per class. That means every other week on average there's a child's birthday party to attend. And that means a present, card and gift wrap - say £10 minimum. That's £240 per year on other peoples kids who you don't know or love, and your child probably doesn't know"
What an odd approach!
If I thought about school parties at all when DS was 2, it would have been hoping he enjoyed them and looking forward to it, not worrying about money (and I am a student parent so money is very tight!)
It doesn't need to cost anywhere near £250 anyway.
For a start it's very unlikely your child will get 25 invites a year. Not everyone will have whole class parties, some won't have a party with school friends at all.
Also you really don't need to spend £10.
I keep a present box, and when I see bargains I buy them for the box. I also put in any unwanted gifts we get, including and doubles we get - so I often have something already. (And what doesn't get used at parties usually gets used at Christmas.)
The Book People are great for example. I got a set of 10 Julia Donaldson books for about £10 IIRC, they made great presents, together with a little something extra.
If you're short if time Argos's 2 for 15 is worth a look, get one for the birthday child and one for the presemt box. If it's a good bargain I get 2 the same.
Sports Direct do two pretty decent and cool-looking football for £6 (or £4 for one). DS's 5 year old friend was really happy when he got one!
If you are buying for the present box (or stocling up for Christmas) sales and bulk buying on eBay are the way to go IMO.
These are great for example Snap on animal bracelets
We got them as party bag gifts. They're about 2 or 3 quid in the shops but not much more than 50p if you buy several from eBay. Kids love them.
I might give a reception class child 2 Book People books and one of those bracelets. It would be IMO a decent present costing about £2.50.