I have 5 younger brothers and USED to spend $50 each on them.
1 of them now has 3 kids so i spend around $25 each per kid, then $50 on my other brothers.
We now have DD and a bub on the way and so far have put $160 worth of stuff on lay-by for her and will prob only add maybe some clothes or books to that.
We then have DP's niece and nephew who normally get $50 - $70 spent on them and his cousins 2 kids (were very close to) and the price varies on what we find at the time.

That said this year i think for EVERYONE we might be cutting back to $25 each and we def wont be doing adult presents, the only adult we do is DP's Nan (86yrs old) and prob just photos for grandparents on behalf of DD.
The best part is DD likes drawing and painting now so a cheap canvas or picture on some paper goes in with the pressies and even the kids love it!

$25 each is not cheap, especially if you have a lot to buy for and my rule is if you have kids you forfeit your $25 to them... lol