Made by PN Scripts, a Sofia studio that builds online shops for Bulgarian businesses, and tested with unit tests for every fee and limit rule, an end-to-end run on a fresh shop through the Store API and the classic checkout, and a browser test that picks payment and delivery methods like a customer. Created with AI assistance; the fee arithmetic, limits, per-method rules, exclusions and both checkouts were tested by PN Scripts with 19 unit tests, an end-to-end run on WordPress 7.1.3 and WooCommerce 11.2.1 and a browser test in Chrome.