I think it is possible to save 300 thousand in the end. The profit of raising crabs on an acre of land should be more than 654.38+10,000 yuan, and it can even reach 654.38+10,000 yuan if it is intensively cultivated. If it is 4,000 yuan, it is 2 million yuan a year. If a worker earns 5,000 yuan, then the annual salary of 10 person is 600,000 yuan, which does not include other costs.