I get the impression, that you want GarageBand for free, correct? All of the Apps that were once called iLife were offered free with new iPad mini. The first time you entered your Apple ID, a dialogue box appeared asking if you wanted to download a list of Apps. What was not explicitly stated, was that those Apps were free if you made the download within the first 30 days after purchase. Once you have the free version, you always have it. Think of it like a coupon. After thirty days, the coupon became expired and the Apps went back to full price. You can get it free with your next purchase of an iOS (iPhone, iPad, iPod Touch) device.