Where can I purchase a VPN account with a non-fixed IP address?

Where can I purchase a VPN account with a non-fixed IP address? If you do not have a non-fixed IP address, you can purchase it in batches as long as there are many VPN addresses. Note: VPN in China is also supported. I mainly want to avoid being blocked during collection. Where can I buy a VPN account with a non-fixed IP address?
If you do not have a non-fixed IP address, you can purchase it in batches as long as there are many VPN addresses.
Note: Domestic VPNs also work, mainly to prevent IP addresses from being blocked during collection.

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Where can I purchase a VPN account with a non-fixed IP address?
If you do not have a non-fixed IP address, you can purchase it in batches as long as there are many VPN addresses.
Note: Domestic VPNs also work, mainly to prevent IP addresses from being blocked during collection.

The number of ip addresses in a regular VPN cannot meet your needs, and the cost is very high.
Informal VPN may satisfy you. They build a VPN through bots after intrusion, Which is unstable, but cheap and has a large number of ip addresses.

PS: I don't know how to buy an informal VPN.