Anyone have a workaround for embedding code from Gumroad?

Site URL: https://www.foreignpresscomics.com/

I have items for sale on Gumroad and want to embed the code on my Squarespace site instead of including a link for people to go to an external site to buy them. My Squarespace plan doesn't support the javascript needed for that. Is there a workaround for this? I'm only vaguely familiar with code, so I can't really code it myself

Hi There! Did you ever figure this out? I am creating an ebook and I would like to use Gumroad. Any tips?