As of 9/26/2017, I will no longer be hosting Paypal purchase buttons on this page. Please use one of the links below if you would like to buy my comics.
To the best of my knowledge, Etsy, Storenvy and Gumroad all accept both Paypal and credit cards as forms of payment, and all three offer guest checkout, so you don't need to have or create an account with the site to make a purchase. On Comixology, you will need to sign in to either your Comixology account or your Amazon account, but again, both Paypal and credit cards are accepted.
Etsy (print comics and PDFs)
Storenvy (print comics and posters)
Comixology (Comixology-enabled PDFs)