I know lots of people who purchase starter websites, brochure sites, themes for CMS (Drupal, WP, Django). Those purchases are mostly in the $20 - $100 range. A

I know lots of people who purchase starter websites, brochure sites, themes for CMS (Drupal, WP, Django). Those purchases are mostly in the $20 - $100 range. And then there's the other end of the spectrum I've seen which is just as common - SAP, Epic Health, some Oracle-based verticals use on-site and off-site consultants to implement and customize their product offerings. Various telco and banking/finance things (SS7, SWIFT, HFT algos) require source code too.