Do I need a PayPal and/or Stripe account?

You don't need a PayPal/Stripe account to get paid for Marketplace sales, and whilst PayPal is still an option for receiving payment from the Marketplace, you can also get paid directly via bank transfer, wire transfer or by check, regardless of whether your customer uses PayPal, debit/credit card or otherwise.

However, you will need a PayPal account and/or a Stripe account to receive payments in your personal stores (personal profile page and Infinity Stores).

You can see the difference between personal and marketplace store payments here.

If you're unable to use PayPal or Stripe, you're free to use the marketplace only and still receive income.