What would you pay for two units four floors apart?

It's hard to fault the views from many Central Park West apartments.

Two full-through condos are on the market in the same building on Central Park West in the mid 90s.

Their views of the park from oversize windows in the living room and master bedroom are bracing, though the bus and other traffic noise on the street below could prove annoying.

These four-bedroom, 2,733-sf apartments in a 1992 building are pretty impressive, and they are priced half a million dollars apart.

Their price histories are curious, especially when compared with each other.