Generally, one can promote and sell his or her books personally or at events. Promoting or selling a book can be done nowadays in events like comic cons.
Trying to keep your costs down when joining this kind of even, especially if you are still starting, is the first thing you should do, and one way is to get the cheapest table you can get hold on. Another way is to share the table with another author who is into selling his or her books.
When you have already established yourself as an author, there are ways to maximize you sales.
The number one thing you can do is to have a one-sentence pitch that summarizes up your book. Avoid confusing people with your complicated or intricate plot.
Next move is to make some noise. If you have an aggressive personality, like standing in front of your table and be able to hand the book to the passersby, and make some controversial or new message about the story, then do it.
The next thing on how to sell more of your books is by drawing people with your irresistible offer, and for those will not so sales-oriented personality, you can give away pens, bookmarks, and so on, unless you have a free print to give away. As you are giving away, it is best to stand since it is better to meet people are their eye level.
The next tip for you to sell more is to have one particular book that you are pushing for sales. Note that the more items you are offering, the more distractions are challenging your buyers.
To upsell is another idea to sell more books, and you can do this by offering a good amount for people buying more than one book or a bundle of the book that you are pushing.
Another thing you can do is to promote your appearance at the event and have fun while getting many interests of your books. You can also view your time at the event as your promotional activity, where you can talk about your books to fans, media contacts and potential fans. It is best to smile and have fun, whether sales are light and foot traffic is low, because people generally will buy from someone who is enthusiastic and not on the one who is grumbling behind his or her table.
Another way to create interest and sales of the book you are pushing is to dress up as the favorite character in the book, excluding one that will frighten people away, especially in fun places like in the comic cons.