Selling a site on Flippa

I own a website (http://www.bongotones.com) that I started in 2009. At it's peak we were doing 250K a year from advertisement. Due to some unfortunate issues, bad business decisions (eg. bad money spent on SEO, design work, etc), business partners being spread across different cities and just priorities we let go of the site. It still has great potential with some TLC. In our prime we were number 3 on google for "Free Ringtones" and over the past 5 years have had over 52Million page views and 6million unique views. the problem with selling on flippa is that lately due to us not having time to keep the site up and only making money from adsense the revenue has dropped dramatically BUT we do have a database of over 180K registered users and 120K ringtones. I think that's where the value of the website is now, a PR3 website with over 6Million pages indexed on google and the database. i'm posting the link here to see if anyone would be interested or get some guidance from people on how to go about selling this.

https://flippa.com/3277671-pr-3-187000-registered-users-122000-ringtones-6-3m-indexed-pages

thanks!