Look into charging per developer, with a site license option. Libraries / components, especially for enterprise development is big business. In the .Net space you have $100m+ companies like DevExpress and Telerik, and smaller, more specific and niche component providers (example: componentspace.com) selling successfully at a few grand a copy.
A few hundred bucks is way too low for any library of substance that saves the local developers a few weeks work.
A few hundred bucks is way too low for any library of substance that saves the local developers a few weeks work.