I changing my shipping from ‘normal’ to ‘overnight’ about a year ago, then later added a second TB (in standard english, in addition to my original Dvorak order) in maybe October / November (thinking it just MIGHT show up in time for a Christmas present, and to hedge bets that the English ones might be done sooner and might ship faster) - each change in the order kicked off a total refund of the original amount and a new charge for the entire new amount. As far as I can tell my shipping estimates for both items still reflect the same eternal optimism of my original order date of March '15.