How do starting prices, variant prices and the amount paid differ?

A destination card's starting price shows the lowest product price for that destination. It does not mean that every data amount, validity period or data type is sold at that price. On the product page, check the price for the selected variant. Review it again after changing data, validity or data type, as different combinations can correspond to different supplied plans. At checkout, also review quantity and any discount actually applied on the page. Pay the final amount confirmed there, then use the order details to check the paid amount and order number. If prices appear inconsistent, send support the product, selected variant and screenshots before paying. For a completed purchase, use its original order record rather than a later product-page price to identify what you paid.