Twenty-nine days is enough time to increase the value of a home by more than $3 million, right? The owner of the penthouse at 101 West 87th Street seems to think so. A Mr. Michael Cook closed on the 3,077-square-foot pad less than a month ago for $7.76 million, and now he's dropped it back on the market for $11 million. Given the short turn around, it's highly unlikely that Cook ever spent a night in the apartment, so all of the "brand new" features touted in the brokerbabble are the product of the building's rental-to-condo conversion that Bazbaz Development completed last year. The unit is currently configured as a four-bedroom plus a library, and it has a huge terrace with a lawn that wraps around three sides. The flip seems ambitious, but the reborn building has seen some solid success.