Free Book & New Books

For a while, I’ve been using the gift certificates from Amazon to fund my book giveaways.  Readers click on my Amazon links to buy things, which leads to gift certs for me, which I turn around and use to have Amazon send out free books.  Sounds great, right?

Only I had a minor case of dumb.  Shipping one book from Amazon runs $3-4 in shipping, so every winning copy of The Stepsister Scheme eats about $11 from one of those gift certificates.

It suddenly occurred to me that I could use Amazon’s 4-fo