If the pre-preorderers have to pay an additional 100€ to preorder the 4G units on May 1st, shouldn't other preorderers also have to pay 390€ for it? In the Dragonbox shop the 4G units preorder price is still listed as 290€. Is this just a mistake at the shop or is there a misunderstanding on my side? It would be really annoying for someone who planned to pay "just" 290€ to see the price go up to 390€ on the day of the first payment.