Worked on the spatie/spatie.be repository to enhance the reliability of Paddle checkout price displays by addressing a bug that caused missing price data. The solution involved implementing a server-side price retrieval path as the primary source, with Paddle event data serving as an optional override, ensuring that Subtotal, VAT, and Total amounts were consistently shown to users. Improvements to price formatting and checkout refresh logic further strengthened the user experience and reduced the risk of checkout failures. This work was accomplished using JavaScript and PHP, with a focus on front end development and robust server-client data handling for e-commerce reliability.