|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||yesterday||28.65||$19.97||You save $8.68|
|Amazon US||3 days ago||21.27||$19.97||You save $1.30|
David Gray is a Forex trader, but when trading platforms began to accept Bitcoins he decided he needed to research this virtual currency. What he found was a lot of confusion, so he decided to put together a book that would explain Bitcoin in a simplified way.