My school do ski trips that are about £900, in Europe somewhere (I don't really know because I have absolutely no interest whatsoever in joining them). We also do a far east trip which is well over £1000, and the geography trip to Iceland is £900 ish as well. I feel very fortunate that dd has never wanted to go on any of those trips, but she does want to do world challenge, and they sometimes do a physics trip to Cern which she'd like to go on if it runs. Then there's an orchestra residential.
Speaking of costing money, apparently dd will need a better flute if she's going to continue. I'm loathe to buy a new flute costing£££ when it's just a hobby, but then again she gets a lot of enjoyment from it.
Luckily nobody in my house is ill currently. Lots of sympathy from a safe distance for all of you suffering. Lots of kids at school are falling ill, so I suspect I'll have a cold soon :(