Another strategy is to connect with newsletters and blog sites that your best customers subscribe to and read frequently. If you are not sure, select a random few past customers and ask them directly. Then send an email query to the publisher or editor of these media and offer to serve as a go-to expert for future Q&A content about collectibles, etc. Perhaps the editor would accept a short guest post that you could submit along with a link back to your business website. In many cases, the only cost to you is your time. This is worth exploring. I would be happy to discuss other strategies with you if you will contact me.