Your domain, your funnel
Point a subdomain of the site you already run at the shop. The reader never leaves your brand to hand over their money.
The workbook, the manual and the companion — sold direct
The course lives on a platform that owns the checkout, and so does the PDF that goes with it. The written half does not need the same machinery as the video half — it needs a page you control, a link that keeps working, and a reader who does not have to make an account to get it.
I sell courses and memberships too. Do I move everything?
No — move the books. This is a bookshop and it does not do video hosting, drip content or memberships, and pretending otherwise would be a bad trade for you. The sensible arrangement is the course wherever it works today and the written material in a shop of your own at 0%, which is worth doing the moment the second half is a meaningful share of the revenue.
What you get
A checkout with no account in front of it
An email address and a card. Every extra field between a warm reader and a $20 workbook is a percentage of them gone.
One link that never breaks
The download page is permanent, and re-issuing it is self-serve. That removes the support thread you currently answer most: the person who cannot find the file.
Revisions ship silently
Update the file and every past buyer's link serves the new version — the same cohort that bought last year gets this year's worksheets.
Traceable copies, no DRM
Every download carries the buyer's name and a licence code, so a workbook posted in a group chat is attributable. Nothing is locked and nothing expires.
No cut on the written half
Whatever your course platform takes, this takes nothing. Cards go to your own Stripe account and bitcoin to your own wallet.
Bring the file you already have
Export an EPUB from whatever you already write in. If your companion material is a PDF today, converting it once is worth doing: an EPUB reflows on a phone, opens in the browser without a download, and can be sent to a Kindle, none of which a fixed-layout PDF does well.
Coming from Payhip?
Payhip sells anything digital and charges a percentage until you pay enough to stop it — 5% free, 2% at $29 a month, 0% at $99. Inkwharf sells ebooks only, takes nothing at any tier, and knows what an EPUB is. Below roughly $380 a month in sales their free plan is genuinely the cheaper deal, and we say so.