Open the same product from two different links and you may see two different prices. A common reason is the voucher button: a seller sends buyers through a link that applies a discount, and the discount only exists for people who arrive that way. We have seen $27 through the seller's button and $97 without it.

Vouchers sometimes fail too. A code expires, a link opens an older campaign, or the discount does not stack with a bundle. The result is a total on the order form that no longer matches what you were promised.

Before paying, read the final total on the order form and compare it with the price you expected. If it is higher, close the page and reopen the original link rather than paying and asking later. Full guide with examples: https://worthorpass.com/blog/voucher-buttons-and-discount-codes/ (Worthorpass earns affiliate commissions on some links; it does not change our scores.)