Payment happens on both instance fees and storage fees, optionally backup fees if you use backup function.
Memory:0.5G, CPU:2 core, Storage:10G, 160 hours (8 hours* 20 days), Ohio region.
Memory:4G, CPU:2 core, Storage:30G, 160 hours (8 hours* 20 days), Tokyo region.
Select instance spec and storage to calculate the fees
Note1: This is estimation. The price can be changed over time.
Note2: 1 month = 20 days = 160 hours for instance fees