It turns out that they have potatoes for each burger, i.e. they sold us 4 potatoes for burgers and we bought another potato from above, because we did not know that there would be enough of it anyway. Sellers with such faces are not happy, as if you owe them something.
It's delicious, inexpensive, and full of nostalgia. The only drawback is not all positions, and they didn't put sauce in the Big Table, but they quickly fixed everything at the checkout. There are terminals just like ours. Russian Unionpay cards are accepted.