I work with small nonprofits and I can tell you that while they are embracing open source tools like drupal and wordpress, many are still not quite savvy enough

I work with small nonprofits and I can tell you that while they are embracing open source tools like drupal and wordpress, many are still not quite savvy enough to run the show themselves. And even the small orgs have annual budgets of around $100k - more than enough to dump $5k or so into a custom design and some integration with their fundraising software.