APEvery New Yorker knows that living farther away from where the action is saves you money. But just how much? You can pay up to $845 less per month by adding one extra subway stop and 2 minutes more to your daily commute, according to a new study by the apartment rental listings website RentHop. The analysis of Renthop's own rental listing prices within less than half a mile from major subway stations shows that the city's most expensive one-bedroom rentals can be found near the 23rd Street station on the 1 line, where the median price is $4,000 a month. The most affordable are in the Bronx on the 5 and 6 lines, where the median is $1,250 near the Gun Hill Road and Pelham Bay Park stations. The median rent for one-bedroom apartments near the 66th Street stop on the 1 line is $845 greater than for those near the 72nd Street stop.