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A fixed-rate exchange is one in which the rate gets fixed and doesn’t change while the transaction is executed. Even if the market is unstable, the user receives the exact amount of crypto that was indicated at the beginning of the exchange, regardless of market fluctuations. Fixed-rate exchanges are accompanied by an increased commission. Changelly is another well-known instant crypto exchange platform that offers the opportunity to fix rates. The service calculates the best rate for the user using an algorithm that takes a variety of factors into account.