Very tricky: When I called opticians and asked how much it would cost to insert eyeglass lenses into a plastic frame, everyone calls the price for turning lenses, and these are for inserting already turned lenses. (in general, money has never been taken anywhere for this). And the turning is separate and as a result the amount comes out 4 times more. They also prove later that you are a fool. Well, of course, crowds are bursting to insert sharpened lenses with a two-day wait and without a guarantee for the frame. As a result, I wasted my time and money on gasoline. And I ordered in the nearest optics for more than 2 times less.