You can also consider selling directly to readers through social media or your own website. This allows you to connect with potential buyers personally and build a customer base.
Bookstores are a traditional and good option. Some independent bookstores might be interested in buying your science fiction books to add to their inventory, especially if they have a section dedicated to the genre.
Online marketplaces are great. For example, AbeBooks specializes in books and has a large customer base interested in all kinds of books, including used fiction. You can easily list your books there.
Online marketplaces such as AbeBooks are great for selling old fiction books. It has a large community of book lovers who are often looking for rare or out - of - print fiction titles.
You can try local used bookstores. They often buy back used books, including fiction ones. Just take your books there and they will assess their condition and offer you a price.
You might have success by creating your own website or using specialized book-selling platforms dedicated to indie authors. Social media can also be a great tool to promote and sell your fiction books. For example, you could build a following on Instagram or Facebook and direct interested people to your sales page.
Local second-hand bookstores might be interested. They often buy used fiction books. Another option is to set up a stall at a flea market or a local community sale.
Social media platforms can be useful too. You can create posts or pages specifically for selling your fiction books. Or join book-related groups and communities to reach out to potential buyers. Another option is to contact independent book distributors who might be willing to take on your titles.