No one can tell you the answer to that question.
I have sold things for 40,000 gold and then the very next day I put it on the auction house for 100,000 gold and it sold.
The market is completely depending on what someone is willing to pay.
Therefore, there is no way anyone can answer your question exactly as you are asking it.
You just have to watch the market, it fluctuates daily.
Good luck.