01 How many is appropriate?
Just one thousand!
Cost is less than one thousand U.
01 = 10U, one thousand of them is worth ten thousand U.
01 = 100U, one thousand of them is worth one hundred thousand U.
01 = 1000U, one thousand of them is worth one million U.
No matter how much you make from the result, your cost is still under 1000U.

0x32708538a107253b51a735a724330a23106ca4ca$ETH #币安热门推荐