I made two transactions. The first was for 950 rubles, when transferring with DASH (the cryptocurrency rate hardly changed compared to the second transaction), and in the end, I received 98.7 rubles for 1 USDT (in the first transaction, I used BestChange). Then I accidentally clicked on the general window for selecting cryptocurrencies to send and chose a similar option with no commission. I thought that since it's the same site, DASH for 850 rubles would cost about the same 98 rubles, so I didn't check how much it would be in the transfer, as I had already made several transactions on this service. In the end, for 850 rubles with the selected commission-free sending method (over 90 minutes), I received 6.1093 USDT, which amounted to 139.131 rubles for 1 USDT. In conclusion: I strongly recommend checking how much you will receive every time!