They are currently sold out and they said it's likely they will not sell any more. If you want to take the risk, watch the MCF Home page every day to see if tickets will go on sale or you can attempt buying them on eBay(with search: minecon tickets).
Two tickets just got listed - no reserve - no min bid ($1). i got mine so these are two for someone else at what looks like a far better deal than previous ones.
Proud member of spigotmc.org.
Now why in the world would your mom be selling MINECON TICKETS?
Proud member of spigotmc.org.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330824418986&ssPageName=ADME:L:LCA:US:1123