Skip the developer invoice — and the developer wait. Hiring out store changes means finding someone competent, explaining what you want, waiting for a quote, then waiting for the build. Owning your codebase collapses all of that into describe, preview, publish. Instead of shipping ten changes a month, you ship ten in a week — and none of them arrives with a $300 invoice. And the thing no invoice ever shows: preview-before-publish and instant rollback mean a new version can't take your store down while customers are on it.