Hey! Today I have contacted Microsoft Support here in Poland to ask about pen nibs availability. After explaining briefly that I need replacements and that I would like to know whether it's possible to buy them, I was asked to contact North American support, as Surface isn't available in my country and they don't deal with it. Upon contacting support for US I was pleasantly surprised by helpfulness of person I was chatting with. I was asked to paste my serial number and after she verified it, I was told that replacement nibs are free of charge and they will be sending them my way soon. I also received order number for tracking, very nice! I haven't dealt with MS support previously, but I'm very pleased with their attitude.