A user selling templates on the Notion marketplace notes that Notion allows direct payments with Stripe, which they are in the process of setting up. They currently use Gumroad as a redirect, implying a preference for direct integration within Notion's marketplace to avoid redirects and streamline the payment process for buyers.
I opened a Notion creator account and its actually really easy. the process in general Is to search Notion creator account in google then just to login with you existing Notion account and setup some very basic info. then you go back to your Notion take a template you want to sell on the Notion marketplace (basicly just create an empty page / pages that till not be in use by you and will contain all the logic of the template) then you click share, publish to web and copy the link. after that you come back to the Notion creator account paste the link and some description etc and then publish, super easy. cool thing is that you can keep update the template after you publish so you can make more improvements. if you want to earn money from it its the best for my opinion to use stripe with it because I saw that Notion allow to make the payment in Notion when you use it instead of redirecting youth some landing page and there to do the payment, im in the process of opening stripe account tho until then I asked GPT whats the most recommend website to be redirect to for the payment and hw said gumroad so gumroad it is for me now if you have any questions feel free to ask