According to the inquiry of the accounting school, from the point of view of profit, this strategy is profitable for businesses. The specific calculation method is as follows:

1. Suppose the cost of the merchant is 7000 yuan, then the profit of the merchant is 10000-7000=3000 yuan. The profit of 3000 yuan is realized by selling goods or services with a price of 10000 yuan, so the profit rate of the merchant is 3000/ 10000=30%.

2. If the merchant adopts the strategy of 10000 to send 3000 yuan, that is, selling a commodity at the price of 10000 yuan and then giving away a commodity or service worth 3000 yuan, then the profit of the merchant is still 3000 yuan, but the sales volume has increased to 13000 yuan. Therefore, the profit rate of merchants will be higher, reaching 30%× 13, 39=46.5%.