Is there a list of non-profit websites using Drupal with the following:

1. Events listing past, present, and future ( e.g a professional organization)
2. Job portal
3. Membership module (join, renew, etc...)

Non-profit organizations cannot afford to pay a lot of money. Any idea what is a reasonable cost for building such a site?

Hi and welcome Elba

www.drupalshowcase.com/ is probably the best maintained list of Drupal sites and there's a list of non-profits here: www.drupalshowcase.com/site-industries/Non-profit

Unfortunately it doesn't break down their feature set. The case studies on Drupal.org will get into more specifics: drupal.org/cases

Also, none of those sites are likely to be cheap.

It might be wise to put in a caveat here: Drupal is wonderful system but one thing it's not is cheap. It's cheaper than many proprietary alternatives, but for a variety of reasons, the cost of getting help and training staff is considerable.

A site like this would probably cost between $10,000 and $20,000 with on-going support costs as needed.