how-to block ads
Some use non-standard (non-native or open source) VPN which means you'll have to download and install their software. For most of us, that's worth avoiding; so go with something using VPN's de facto standards (Microsoft, Cisco, etc.) Also make sure you pay with a reliable service like Google payments or PayPal, and make sure the merchant is a verified user of that service, so that your purchase is somewhat covered by a guarantee.
Other than the above considerations, what you're really looking for is a reliable company that is established and that gives you a fuzzy feeling about working with them. PayPal verification and their response to your initial inquiry should tell you a lot.
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