When dh and I got married we had our own dcs as bridesmaids/pageboys and dn as flower girls, we got their dresses and they wore shoes they already had.
Sil got married recently and asked dcs to be bridesmaid/flower girl and page boys and sil got the outfits, we got dcs the shoes. I thought this was pretty standard as to how things are done.
As a present we usually give or spend £50
Dsis will be getting married soon, she would like me to be her bridesmaid and for our four dcs to be bridesmaids/pageboys. She was showing me dresses/colours etc she wanted, cheapest dress for me was £100 and dcs stuff would be a lot. She said "instead of buying us a gift your gift to us will be that you buy your own dresses/outfits/accessories and please would your dh make our cake as it will save us money" judging by what she is looking at the outfits will cost us £££ and we can't afford it but I don't know hw to tell her. She wants to keep costs to a minimum and as much as I'd like to help Its just too expensive.
I was thinking of steering her towards cheaper options but she has her heart set on certain colours etc and certain 'looks'.