This is an argument of ethics, and ethics - like opinions, taste and subjective experience - can't be effectively argued. If a small modder takes the time to design and manufacture a product, fine tuning the tubing, aesthetics, threading, switch, or any other features of it, and a chinese company steals their design and mass produces copies of it, that's unethical IN MY OPINION. Listing out the costs of materials to make a mod and then condemning modders based on the discrepancy between cost of material and retail cost is the same thing as condemning a painter because he charges more than cost of materials for his paintings. You pay a premium not for the metal tube with switch, but for everything that went into making that tube and switch, which is far more than you might think.