Amazon's 30% profit margin usually refers to the proportion of net profit to sales. In other words, Amazon hopes to obtain 30% of sales as net profit after selling goods.

This 30% profit margin is a target value set by Amazon to measure the profitability of its business. In fact, Amazon's profit margin may vary due to a variety of factors, such as sales growth, changes in operating costs, and the intensity of market competition.

It should be noted that this 30% profit margin is Amazon's overall profit margin target, involving Amazon's various business areas and markets around the world. For individual sellers or partners, their profit margins may be different, depending on the specific cooperation agreement and business strategy.