Its why I'm trying to find someone else to find some of these LTD pre-orders, I remember one case where I paid for something, think it was a gundam model kit (mg-was a big one) that I chose SAL shipping for, and when it was released they got the shipping wrong and went to collect the correct amount, sadly the amount was stupidly high and did a bit of research and found EMS was cheaper, no option to change was present so after a week going back and forward I FORCED them to give me ems shipping (was only just shy 2000yen more than the previous sal I pre-paid rather than the nearly 5k increase for sal).
That and the dx chogokin debacle made me realize how shitty they've become despite being so well known