LaTale Market and Astros
OGP is going to start cracking down on people who sell or buy astros for in game items and currency. I think its best to follow their lead and close all threads and amend the latale market rules to prohibit this kind of trading.
According to support on the official forum, you may only trade fashion shop items that are tradable with the current in-game functions. Even advertising your intention to "sell astros" can and already has gotten people permanently banned. Simply say that you are selling the actual items, such as experience puzzles, and you're fine.