The credit is the price you paid times the share of its time still to run, rounded down to whole dollars. It comes off at Gumroad's checkout, where you choose your course and how long. Not signed in? Sign in first with the email you paid with.
Moving up
Bought a revision pack or the Years 7 to 11 plan, and need more? Move up, and the unused part of what you paid comes off the new plan.
The credit is the price you paid times the share of its time still to run, rounded down to whole dollars. It comes off at Gumroad's checkout, where you choose your course and how long. Not signed in? Sign in first with the email you paid with.