One of these things is not like the other:
2nd floor. Likely owner-occupied. Likely not a "motivated" seller. Unsold.
3rd floor. Likely not owner-occupied. Definitely a motivated seller. Sold.
Man, that first seller must be pissed. Because one unit sale just established a new benchmark for this building: On Sale, over 20% off.
Me thinks there will be plenty more of this to come in the next few months.