Originally Posted by egbtmagus
They are community based and free... You dont need to sell it to anyone.
But you do have to "sell" the idea to the community or else you'll never get the attention of skilled modders. If you have a team of good modelers, mappers and texture artists but no one that can program the mod to work, you're getting nowhere. So you need to have some good work done already to show the community that the rest of the team is skilled enough to actually get the project done.