Some five years ago, my missus and I arrived at a buddy’s out-of-state wedding and realized late the night before we hadn’t even thought of buying them a gift.
(Well, our wedding had only been the week before and we had other things on our minds.)
We drove down the highway to a Wal-Mart or some such we had seen on the way. Knowing my pal is a huge fan of Cool-Aid, we got several packets of it, a silly drinking mug, and something we figured some newlyweds who did not live together previously could use: A kitchen wastebasket.
We spent not $15, but to this day they tell us the garbage can was the most thoughtful and useful thing they got for their wedding.
As an aside, as we wrapped it in our hotel room we were forced to use the day’s newspaper. Pretty clever, huh? 
We give a check for a hundred bucks, give or take a few bucks, to cousins and friends. That’s been my amount for a very long time. I sometimes base the give or take bucks on what we were given at our wedding, but sometimes I base it on how much I like the person or people.
For my brother I gave 200, but it would have been 500 if he’d gotten married in the Northeast where my family didn’t have to take a plane and stay at a hotel. I kind of suspect he was expecting more, but what can you do?
I never buy a present for the actual wedding, but I used to when I was young and poor.
Just spent $100 on a wedding gift, but it was from me and my fiancee. So that works out to be $50 each.
Kalhoun, now it appears that you’re married to my husband, besides living near me. 
My husband usually says $40 or $60. WHAT’S UP WITH THAT?? That is so annoying!!
To answer your question, tilty, since I write the checks, I usually give $50. That’s for friends.
I usually try to make something. I’m currently knitting an afghan for a friend’s wedding. If I paid myself minimum wage to work on it, it’d worth be a couple hundred dollars. And I reckon I’m at least a journeyman knitter, so I probably rate a higher wage than that. Then again, there’s no health care or retirement plan. 