It’s either a store with small display cases or a home with really big curio cabinets. Fully-fenced and mostly burglar-barred, the shape-shifting property fronts the rebuilt roadway and drainage improvements of Fulton Street in Pine Grove, east of I-45. Metro’s Red Line extension plans its future Northline Transit Center just past Crosstimbers, 3 blocks north of the storefront-residence. Earlier this week, the mixed-use property reappeared in the MLS listings with a new agency and price, $99,900, after a 2-month market breather. That’s about twice the price of its sale for $45,500 in 2009 — but significantly lower than the $135,000 sought in a year-long listing that expired down a bit ($124,900) just this past September.