Why do some checkouts auto-convert currency while others force the store’s default?

If you want everything handled in one flow, look at dedicated checkout layers that support multi‑currency pricing and local payment methods. For example, solutions like https://checkify.plus/features/multi-currency-checkout recalculate cart totals, shipping, and discounts in the buyer’s currency using live rates, then settle in your base currency. This reduces confusion and can improve completion rates for international orders.