what are you asking for the ticket? and how will you provide the ticket? by doing a transfer on eventbrite I hope. and using forum escrow - especially as your account is a newbie?
Yep, I think she/he should put the price of the ticket and other details like the date, the place where it will be held. I think you should be put also how they will pay you and how they will get the ticket. Since you're newbie in this forum you will get hard looking the seller of course. People nowadays didn't trust easily and some preferred cash on delivery basis for assurance.
How much are you looking to get? Will they not issue you a refund?