Ask HN: Selling side project app

I've been working for a few months on a neat little app and associated web site for a niche market. I've got branding, logo, domains, admin panel etc all pretty much ready. Unfortunately some commitments of mine have came up and it's unlikely that I'll be able to continue with it. I had some success a long, long time ago selling an ecommerce site in a similar state on ebay. I understand there are sites like flippa which I can give a go. I'm not expecting to make huge sums of money, but would like someone to take what I've made and give it a shot and hopefully get some beer money.