Yes, you are able to sell merchandise including book bundles, apparel, mugs/bookmarks and more on your website if you are a Tertulia PRO subscriber. You can go to the Merchandise section in the website editor to start setting up your items.
If you are not already set up with a Stripe connected account, you must first enable payouts. Go to Ecommerce > Payouts to set up your connected Stripe account so that are able to get paid for merchandise sales.