It would be best to check if they offer free trials. One major issue is many streaming services have been blocking VPN services, and even if a service works now, there is no guarantee that a service region locking content, will not end up blocking many of the VPN servers, thus it is best to avoid any long term contracts.
Also keep in mind that for some websites that enforce IP bans will inadvertantly ban accounts though that is more common with more esoteric ones such as dating sites, and others that maintain strict single account policies.
Due to that, it is often best to go with VPN services that offer split tunneling functions. e.g., if streaming with your PC, using a split tunnel to run standard web traffic directly to the internet, and streaming services over the VPN, though that often requires being able to install their specific VPN software, rather than a router forwarding everything.
