Well as 1.5 approaches prices will fall due to the auction house.

My reasons:

Since not all people spend there time town to sell there pinks the auction house will be available for people to sell when ever they want.

More people selling , lowers the value of items and items will be more common because more of those items will be sold.

That's my theory.

My adivce to sell you pinks that you have before this patch of you want to make the most profit.

Good luck!