Within the new Memberhub Store by default, processing fees for purchases made in your store are passed on to the payer. However, you may choose to cover fees for payers if you like. To do this follow these steps:
1. Click on the Online Store on the left-hand side > then store settings. 
2. Look for Processing fees on the bottom and choose change.
3. Choose to Pass on processing fees to your payers or Cover processing fees for your payers.
4. Click Save Settings.
Note: Processing fees for Stripe are 3.5% + $0.50 per transaction for debit and credit card transactions. There are no fees for payments collected offline.