I saw a guide about this but I basically just wanted to purchase the physical boxes for Kizuna Akari and Tohoku Zunko's V4, and since I have Yukari v4 already, I would get their special user discount that they have for ppl with registered vocaloid/voiceroid or other vocal synth products. When I buy their special user discount versions, it opens a pop up of a "World Shopping" shopping cart, with the vocaloids and stuff like quantity, etc. The issue with this is that you have to enter your serial code (for Yukari V4 in this case) to get the discount and it wants me to enter it to their forwarding service page so that they can buy it, which I don't feel comfortable doing. It doesn't really matter if I do it but maybe someone else has ordered from them recently and knows how to use the website better than I do?