The China cobs are shitty. The shank is cut wrong. It will burn out very quickly. In the bent pipes, the 'bent' is only in the plastic mouth piece. The shank is level, not angled, and once again it is inserted wrong and some will be lose as soon as you get them. Also, being from China, you do not know what they were sprayed with to stop mildew and rodents in the warehouse. They are worth about fifty cents each. You aren't really saving anything. MM is cheap and the best you can buy.
Aristocobs is another reliable on line seller of all the MM cobs. I believe he will send by regular first class mail as opposed to the shipping companies. I've had no trouble getting them sent to Canada without paying UPS rates.