They have that for an engagement party im going to and a wedding. They are requesting on their wedding invitation the amount it costs to have each person, i.e. if it's $70 per head they are wanting that etc. I think that is a bit rude because not everyone can afford it and while they want to cover their expenses it isn't everyone elses responsibility if they want a super expensive wedding but expect people to come.

Im a bridesmaid so have to pull $300 out my arse for a dress I can't afford and probably won't like either. I told her if she chooses dresses over $300 I'm not paying because I can't even afford the $300 thats my condition if she wants me to be a bridesmaid.

Personally depending on financial situation I think $20 for distant, and maybe $50 or more for close close friends and family if you can afford it.