Suggestions for a small purchase amount for new users?

The price of Bitcoin is as high as 60,000 US dollars, 0.1 btc is 6000 US dollars, and 0.01 is 600 US dollars. 

If the purchase of computing power is too small, the output is relatively small, and the transfer of Bitcoin in and out will incur a service fee. If the amount is too small, the operation of exchanges and wallets is very troublesome. For new users, it is recommended that the minimum output be 0.03 when purchasing computing power and mining machines.