Signing up to Covert Commissions is free. You get 1 mission that you can promote, drive traffic to, and earn commissions from. So from there, no purchase is necessary.
You then have the option to purchase our current offer at $19.97 which provides you with 5 credits which you can use to purchase/activate more missions and promote more products.
Upgrading is completely optional. But if you would like to have access to your list and use your own autoresponder, you will need to upgrade.