Aren't they selling for few times that amount on the TP? If so, why would anyone sell it to you for less? (or why would you believe anyone that says they would) How would you handle this transaction to make sure somebody doesn't just take your 150g?
Well... make the person mail the item, and set the trade, so that i have to pay before i can resice the item?.
And yes they are on ah for higher... but not sure ppl really got that amount of gold? 500?
I'm not sure there are mechanics in the game that you can insure that happens, unless you find a VERY TRUSTED third party to receive both items and then give you the item and the other side the money.
Not sure if people are getting 500g for it, but I do believe the BUY ORDERS in the TP are more than 150g, so right now somebody can go on the TP and sell their dusk/dawn for more than 150g with zero risk, or they can try to trade you for less gold and more risk. Why would anyone chose to do the latter?