If a product is advertised as a "copy", "imitation", "replica", "cheap", or "lookalike" then it’s clearly a fake. Also exercise caution if designations like "imported goods", "in the style of", "type" or "similar to" are used. If a seller says that he cannot vouch for the authenticity of the product or that there might be slight deviations from the original, then it’s better not to buy it.