Don't test the market with eBay if there is low competition, chances are you will earn more competition after a couple sales. I know, because this is sometimes how I find products.
You mentioned blogs, so I'm guessing you might have a little wordpress experience. WP eCommerce will work, and you can find someone who can change the design around a little to make it more personal and unique after a couple sales. Build links by created blogs and articles (reviews) about the product pointing to your website. If there are any forums that talk about your item, drop a couple links there and become a regular user. Also, charge a little more than you would on eBay.