Overview

You can change the billing mode if it no longer meets your needs. Table 1 lists the changeable ECS billing items.

**Table 1** Changeable VPN billing items
Billing Item	Change Scenario	Reference
VPN gateway	Change the billing mode of a VPN gateway instance from pay-per-use to yearly/monthly to enjoy lower prices. Upgrade a yearly/monthly Enterprise Edition VPN gateway to support access via non-fixed IP addresses.	Enterprise Edition VPN Changing the Billing Mode of a Pay-Per-Use VPN Gateway to Yearly/Monthly Changing the Specification of a Yearly/Monthly VPN Gateway
VPN connection group	Increase or decrease the number of VPN connection groups for a yearly/monthly enterprise VPN gateway (with the specification not being Basic).	Increasing or Decreasing the Connection Group Quota for a Yearly/Monthly VPN Gateway
EIP	Change a yearly/monthly EIP to a pay-per-use EIP billed by bandwidth. The change takes effect when the yearly/monthly subscription ends. Change a pay-per-use EIP billed by bandwidth to a yearly/monthly EIP. Change the billing mode of a pay-per-use EIP between billed by bandwidth and billed by traffic. For details, see Figure 1.	Billing Mode Change Overview of EIPs