Selling your first course does not have to start with a monthly subscription. Constants lets you upload course materials, sell ongoing access, and answer student questions with an AI agent, all from the same link-in-bio page you already have, without paying anything before you make a sale.

What Course Materials Actually Means on Constants

Constants sells course materials the same way it sells any digital product: you upload files, a buyer pays once, and they get instant access to what you uploaded. That covers PDFs, video lessons, workbooks, and templates well. What it will not do is drip-feed modules on a schedule or track a student's progress through a curriculum, because Constants is not a learning management system.

Selling Ongoing Access With a Membership

If your course is really an ongoing cohort or a growing library instead of a single download, sell it as a membership. Subscribers pay every month for access, on the same 10 percent fee Constants charges on any subscription, and you can upload new material to the same membership as you make it instead of repackaging a whole new product each time.

Hosting Live Sessions With Events

A course usually needs at least one live touchpoint, a kickoff call, weekly office hours, or a Q&A before you close enrollment. Constants sells tickets to a virtual event the same way it sells a digital product, so you can charge for a live session and hand out the video recording afterward as its own download.

Answering Student Questions With Your AI Double

Every course generates the same handful of questions on repeat. Instead of answering them one by one, you can sell subscription access to your AI Double, the agent that already lives on your page, for a five dollar a month minimum. Students who want more than the material get ongoing answers from an agent trained on how you actually teach, and it costs you nothing to staff.

What Constants Doesn't Do

There is a real ceiling here. Constants has no drip-fed curriculum builder, no quizzes, and no progress tracking across modules, the infrastructure a platform like Kajabi is actually built around. If you are running a structured, multi-module course business at real volume, our Kajabi comparison walks through exactly where that infrastructure starts paying for itself.

The Cost Comparison

Kajabi's cheapest plan starts at $179 a month before you have sold anything. Constants is free to start, with a flat 6 percent fee on one-time course sales and 10 percent on memberships or agent access, and nothing due in a month you sell nothing. That flat fee only starts costing more than Kajabi's subscription once you clear roughly $3,000 a month in sales, so for a first course, a small cohort, or anything you are still validating, the math favors starting on Constants and revisiting the question once volume is a real problem to have.

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Pick Constants If, Pick a Course Platform If

Pick Constants if you are selling course materials for the first time and do not want a monthly bill before your first student pays. Pick a dedicated course platform once you are running a structured, drip-fed curriculum at a scale where its flat subscription genuinely costs less than a percentage fee. Full plan details live on the pricing page.