I would like to know..

[George]

Another thing to consider is do you want to become this person's source?

If you do it once, what about the future every time they turn to you for another need; key changes, etc?

If you're not willing to live with that, then the easiest time to say "no" is now.

They can buy Vogone and do it themselves, considering the expense as a part of their wedding gift. If it's not worth the money to them to do that, then it's not really that important to them, is it?

This is all assuming the person is a stranger to you who has emailed you. If it's someone you know, a sticky wicket, for sure.

George