There is nothing on the actual coupons that say they will expire in a certain amount of time. But today all of mine expired and were removed from the inventories. So how do we tell how much time we have to spend them, or is this a bug?
When I got one it gave me an expiry date .. of the same day. I did not use it because a 5% discount was no incentive whatsoever
They have the same icon as the temp spell reducers etc that drop during special events and those last 4 hours so i guess its the same these coupons should have the limited time text on them though
Whenever you get a coupon, examine it and then a message letting you know the time you have will appear in chat window.