Well, I certainly give you points for a clever response!
However, note that names of rivers are properly capitalized -- it should be "за Оку, за Сутку".
Also note that at 1500 km in length, the Oka is nearly 20 times longer than the Sutka, and connects the Moscow river to the Volga -- thus it can be used for boat transport between the two major cities of Moscow and Nizhny Novgorod. But the Sutka connects swampland with a large dam-reservoir. So it seems rather unlikely that the oligarch would've paid more for the Sutka!
(But admittedly, my example about shipping packages "across the Sutka"' didn't make geographic or economic sense, either.)