Being forced to pay a ton for priority shipping to just have the seller sit on the item for days before getting it into the mail.
I bought something on Saturday, paid 10 dollars for shipping, bought something on Sunday and paid 15 dollars for shipping. Neither of them have gotten into the mail yet. I understand not being able to ship something immediately as someone pays, but when I'm getting gouged so much on shipping (believe me I know how much these things weigh) I would at least like them to get into the mail by the second business day of the week!
*Grumble, grumble, grumble*