There are times you may want to offer a product free of charge. Such as gifting it to someone, or offering it as a promotional purchase. There are two ways that you can do this.
First you can use the freebie link within your product and anyone can use that link to register for the product without having to pay or provide payment information.
A freebie link will allow a purchase to go through, even if the cap on registration has been met, or the product is closed for new purchases.
The reason is that the freebie link is designed to let you add an assistant or other internal staff member that doesn't count in your quotas to the product, even after registration has closed.
In order to "sell" a product for free and still have the registration limits honored, create a new price (could be secret) and set the amount to zero.
Second you can create a price point at $0.
To do this go to prices within the product--> Create a new secret price or Coupon code --> Set it at $0 and save.
You may want to consider to set up as a campaign price so that your purchaser sees how much they are saving. Even as a campaign price it could be set up as a secret price so that it is only available to those you want to share it with.
Note, The price doesn't have to be set-up as a secret price or coupon code but if you choose to add it as a list price it will be viewable on the normal order form for anyone to purchase free of charge.