Selling or Open Sourcing a CI app

[eluser]renownedmedia[/eluser]
I'll either be selling, or open sourcing, a rather large CI site I built (> 12,000 lines of code).

It uses CodeIgniter 1.7.2, Tank Auth, and Modular Extensions, and Multicache.

The site/app itself is an invoicing / time tracking application which needs more attention that I'm able to provide.

The app is hosted at: neoinvoice.com

If anyone knows of an interested party, please let me know. If anyone has some big arguments for open sourcing it, let me know as well. I've already have 13 public repo's on my GitHub (github.com/tlhunter) and I love sharing with the community, but after putting hundreds of hours into development and spending nearly a grand on hosting, I would like to get something back.

Thanks!