Today I finally found this exchange that my friends had told me about before; I just forgot about it. I decided to exchange rubles for bitcoin, and it turned out that the selection of cryptocurrencies here is truly vast. I made the exchange without even having time to explore the entire range they offer. Honestly, it's the first time I've seen such a wide selection at an exchange. The exchange went pretty quickly; I can't say exactly how long it took, but overall everything went smoothly.