Module Quality Varies Wildly
The PrestaShop Marketplace has thousands of modules from hundreds of developers, and the quality range is enormous. A module from a top developer is solid; a module from a one-person shop in 2017 may not work with PrestaShop 1.7.8, let alone PrestaShop 8. Compatibility testing is on you, and many merchants stay on older versions because their modules will not survive an upgrade.
Smaller Community Than WordPress or Magento
PrestaShop has a real community, but it is smaller than WordPress, smaller than Magento, and smaller than the BigCommerce or Shopify ecosystems. Finding developers fluent in PrestaShop's Symfony-based architecture, Smarty templates, hooks, and module structure is harder than for the bigger platforms - and recruitment cost reflects that.
Documentation Gaps for English-Speaking Teams
PrestaShop is a French project. The official documentation has improved, but module documentation, forum threads, and ecosystem resources skew French-language. English-speaking teams find themselves running French forum threads through translation to debug an issue that a French team would solve in minutes.
Hosting and DevOps Burden Stays With You
Unlike Shopify or BigCommerce, PrestaShop hosting, security, performance tuning, backups, and PHP version management are your responsibility. Most merchants run PrestaShop on managed hosts, but the application-layer maintenance - caching, image optimization, module updates, security patches - stays in-house or with an agency on retainer.
Modernization Stuck on Legacy PHP and Themes
Many PrestaShop stores are still on 1.6 or early 1.7 because the upgrade to 1.7.8 or PrestaShop 8 breaks too many modules and themes. The modernization conversation - Symfony architecture, modern PHP versions, Hummingbird theme - is a project on its own, often $20K to $80K, before any marketing or CRM migration even starts.
The Real Cost: A Capable Open-Source Storefront With a Maintenance Budget Hidden In Hours
PrestaShop is free in license. The hosting, paid modules, theme licenses, developer time, and marketing tools stacked on top routinely cost $20K to $80K a year for a mid-market merchant. The bigger hidden cost is the developer hours spent keeping the module ecosystem stable through PrestaShop core upgrades. HubSpot replaces most of the marketing and service layer with one platform and lets PrestaShop keep doing the storefront.