The cost differential between SonarQube editions varies by codebase size. For a 500K lines of code deployment, SonarQube Developer costs $2,500 annually, while the Enterprise edition for 5M lines of code costs $35,700 at list price but can achieve discounts of 39-46%, bringing the effective price down to $19,385-$25,454. It's advisable to negotiate Enterprise pricing early if approaching 1M+ lines of code.