Buyer's remorse? The plan all along? However it happened, a penthouse at the Tribeca blockbuster 101 Warren Street has returned to market just three weeks after selling in late December for around $7.65M. The new price, $8.6M, seems like a shameless cash grab, but this particular penthouse, which sat on the market for more than a year before selling, is an unlikely candidate for a quick flip. Still, the unit is pretty unique, with a double-height loggia that encloses a wrap-around 1,076-square-foot terrace, floor to ceiling glass in every room, broad views of lower Manhattan, and three bedrooms. Top-of-the-line finishes include a Bulthaup kitchen, Sub Zero fridge, two-person soaking tub, and Dornbracht fixtures. For those not quite ready to commit, the jaw-dropping space is also available for rent at, wait for it, $32,500 per month.