First, if you bought wards with the intention of selling them, i want to punch you in the face. They are pretty much the only things that are very strictly limited by their numbers, and selling them wont raise the counter back up.
Second, as aforementioned, the ONLY way to resell "fresh" items while being dead is via courier. Stash will be disabled for the time youre are dead.
heh, you can punch me anywhere you like, those wards would've been in the shop for the whole game, if it wasn't for my emergency purchase... One does not simply ask the support to buy wards in <1500