gomy•bio keeps a small platform commission on each gift sale, automatically deducted at checkout — you never have to invoice anyone or transfer money manually.
You can see the exact current rate on your My Gift Shop page, in the "Get paid instantly, straight to you via Stripe" panel before you connect Stripe. The remainder of the price you set is yours, sent straight to your Stripe balance for every sale.
On top of the platform commission, Stripe's own standard payment processing fee also applies, the same as it would for any online payment — this is set by Stripe, not by gomy•bio.