We get threads like this, about name change due to marriage, several times a week.
Compared to others you got this done quickly & for low cost.
It is not the airlines fault or problem: it is caused by the passenger

Some (very few) will change the name easily at no cost
Some will change the name at a low fee (like MH)
Many will refuse to change the name and require you to buy a new ticket
But it does depend on the ticket t&c's