Indeed, the prices are economy (about 1-5 UAH cheaper than in the rest, depending on the distance). But also cars - usually old, modest ones arrive. A good taxi ordering system: you call, they drop you off and call you back, and then they send you an SMS with the car number and arrival time. A huge BUT - cars are not always available and it often happens that you wait-you wait for a car, and you get an SMS: sorry, there will be no car. It's just annoying, especially when you're late for something or standing in the cold...
Budget option: feeding machines, low prices.
The last trip turned out to be sad in the sense that I had to wait for the driver for about 40 minutes. The driver messed up something and got lost in the Center :)
Thank God, we were in no hurry. In general, the speed of the cars is the weak point of this taxi. Perhaps this is the only serious drawback.