شراء Reserved VM

HI
When purchasing a Reserved VM, is the calculation done daily or monthly?

You will have to pay monthly for a Reserved VM.

Should I buy Cycles Balance or should it be withdrawn from the card?

You can buy it at replit.com/pricing.

https://replit.com/pricing#:~:text=Estimate%20your%20cost-,Reserved%20VM,-Starting%20at%20%247