Hello, I am new here, so IDK if it is still OK to post in this thread, or is it already considered "necromancy", but I did have bad experience with nds-card. com too, just recently.
Being new to all this DS flash-cart business, I was looking a bit around the internet and saw that nds-cards. com was usually the recommended seller, and decided to go for them. I also decided to order a rather inexpensive card for my first time, to minimize risks. So I went for the R4-SDHC for Nintendo DS Lite and DS.
I am currently living in Germany, but I am from Croatia, so my Visa card is issued in Croatia. That is both EU. When I wanted to pay for the order, the payment page was also asking for the country the card is issued in, but I couldn't find Croatia in the drop-down list. I thought it was strange, because at the shipping methods page they ARE listing Croatia among the shipping destinations... So I thought the that bank card country list doesn't matter probably, because the country is visible from the card number, anyway. So I left the default (China) and went on inputting my payment info, and I clicked "Pay". The page told me the payment was successful, no errors at all, but also no transaction ever happened on the bank account linked to that card. I've become suspicious, and I didn't want to keep trying and risking multiple payments, so I wrote an e-mail to bengbengxiao @ gmail. com, as they suggest and "promise" they would reply within 24 hours. It's been more than 48 now without any reply.
On a side note, later I have also noticed that they were offering prices in different currencies. They say: "Shopping Global ! One World One Price !", but if I change the currency to Euros, the numbers stay the same, meaning that whoever decides to pay in Euros, actually pays more.
All of this, including Bazooka_Face's experience, doesn't really speak of them as a reliable website... In fact, all of it suggests inefficiency at best, or fraudulent activity at worst.