If your domain name does not have much value it all comes down to traffic and the revenue generated by it, if your website makes for example $1,000 dollars a month then most website investors will pay you around 24 months of net income.
If your website has no traffic or sales it will not be worth much.
I know the theme you are using. I was thinking to sell these sites with the theme of around $150-300 If you don't have traffic and around 1k if you get some sales. My taste of the price is pretty low.
Hiya, are you in a rush to sell it, I would spend months to build natural backlinks to your site, without rushing them, but nice and steady so you get a buildup of targeted traffic to your site.