Damn Cheap!

wow..304 stainless steel entrance single door is selling at RMB650.00 at taobao! This is consider damn cheap... I wonder what is the weight of 1 single entrance door..Let's says it is 50kgs..delivery by sea is charging at RM7.00 per kgs..so the postage will be RM350 ..materials cost + delivery cost = RM325.00 + RM350.00 = RM675.00..I think this is still consider cheap here...just that is it tax free?