Articles
What things cost, why the number is usually decided by whoever speaks first, and what to do about it. New pieces get added as we go.
How much should a bachelorette party cost per person?
Why the averages you find are useless, the four choices that actually set the cost, what groups forget to count, and how to land on a figure everyone can pay.
How much should you give for a group gift at work?
The first reply sets the price for twelve people. What actually makes a contribution reasonable, why "give whatever you like" backfires, and what to do instead.
Splitting costs or setting a budget? They are different problems
Expense splitters settle who owes whom afterwards. Setting a ceiling beforehand is a different job, and doing them in the wrong order is why people drop out of plans.