This feels more like an annual subscription of something like $12-$14. $1/month, up front for a year sort of thing. If you've added some more value add stuff

This feels more like an annual subscription of something like $12-$14. $1/month, up front for a year sort of thing. If you've added some more value add stuff over the year, people may renew. That's assuming you want to keep 'subscription' approach and not just charge a one-off fee.