Well here are the starting ticket prices for WM 29 in NY/NJ. My guess is that ticket prices will be similar in new Orleans next year. Good news is that you have time to save beer&tix money before they go on sale in the fall 2013.
Here we go,
Source,
WrestleMania 29 Ticket Prices Revealed + Pre-Sale Passwords - WWE - eWrestlingNews.com