Book launches are an important part of any book promotion strategy. They can be expensive, though, and sometimes it’s hard to figure out how to do them on a budget. Here are ten ways to launch a book for less than $500: 1. Create a Facebook event and invite all your friends. 2. Promote the launch on social media with links to purchase or pre-order the book. 3. Send out an email blast to your newsletter subscribers, letting them know about the upcoming release date, and offer a special discount code for those who want to buy it now. 4. Give away prizes for pre-orders. 5. Create a free giveaway…