1, factors U disk U disk chip is quoted in the size of the problem, for example, between the price of 2GB / 4GB / 8GB / 16GB / 32GB is certainly not the same.
2, U disk real offer and style is what a relationship looks like, metal and plastic models of the price is certainly different styles, why, because the material is not the same. In addition the price of black colloidal chip and the General Board, the wrist is not the same steel plate, black gel is usually more expensive general-purpose capacity.
3, the number of purchase U disk is not the same, the price will be different, 100 and 5000 of the price is certainly not the same.
4, tax, packaging, LOGO silk screen or laser, etc., will be reflected in the price above.
5, terms of quality requirements, then the chip has not quite the same, such as Samsung's original customer needs, as well as the required rate and other prices will be quite different.