It highly depends on the price of the product you’re selling.
If you’re selling 2.99 monthly subscriptions, then Stripe is eating ~13% of your revenue (30c + 2.9%). Or ~$6k per month in the grandparent commenter’s case ($30k in your case).
If you’re selling 99.99 monthly subscriptions, then it’s only ~3% of revenue.
Contrast this to PayPal who offer a “micro payments” solution for such cases - where it’s a flat 5% + 5c fee.
