It depends on what you actually need, but Paybis is one service you could include in the comparison. The official site is here: https://paybis.com/ . It’s worth looking through the available cryptocurrencies, payment methods, limits, and fees rather than assuming that a simpler purchase flow automatically means a lower cost. I’d also check the final quote for the exact amount you intend to purchase, because the effective rate can be more informative than a general fee advertised on the homepage. Availability and requirements can also differ depending on your location.