A custom CMS, not a monthly subscription. Payload is open source, so there is no licence fee, no per-seat charge and no platform bill that grows as the catalogue does. The only running cost is hosting. And because it was configured for this business rather than bought off the shelf, the admin speaks her vocabulary — peças, bouquets, arranjos, the moment a piece is made for — instead of generic posts and products she would have to translate in her head. The content and the code are hers to keep.