Thanks for the kind words of endorsements. It is very unfortunate that you had to sell the site - but I fully understand that this is for your next move in your web venture - wish you good luck.
Have you listed your site at
SitePoint Marketplace - Buy & sell established web sites, turnkey websites and more - this is the excellent place for selling sites. Also try listing it at
Webmaster Forum - Internet Marketing & Search Engine Forums ,
Buy, Sell, Appraise and Auction Domain Names at Sedo, the #1 domain name aftermarket, broker, reseller, and appraiser! - I have seen people listing there as well.
This guide is a best one with advises for selling sites:
How To Sell A Website - How Much Is Your Website Worth? - Entrepreneurs-Journey.com by Yaro Starak
The site is generally valued by the traffic, domain name, audiance/current userbase, design and user experience it offers - so provide details on these to your potential buyers.