Question
I feel like giving it for free to as many people as possible, however the changes of getting it in the hands of as many people as possible may be very costly and if I sell it then that can cover the costs of reaching more people with the message.
Answer
Offer an ebook version instead, and get your readers/visitors to sign up to your mailing list in order to get the free download. Giving something away for free like this is a FANTASTIC way to build your list, and building your list is really the best way to build your author career.