Love this alternative. Have you ever checked out thrivecart?

It’s a lifetime deal fee and you connect it with stripe. I believe stripe has lower fees than 5% somewhere around the 2-3% range (I think).

For email marketing it may also be worthwhile to check mailerlite as it’s free for up to 1000 subscribers and comes with email automations on their free plan, which is phenomenal.

Just a thought to some alternative resources that may be worth checking out