This 1-BR, 1-BA on Beacon Street might very well be the least expensive condo on the market right now in Beacon Hill. What's it got to offer? Functionality, people. A couple of hot plates and a port in a storm; right across, it looks like, from the State House. It's 426 square feet in a turn-of-the-last-century building, and it last sold in 1996 for a whopping $75,200, according to Zillow. Oh, and its tag has just been chopped $100, probably to get to the top of the MLS or maybe to get in on a burgeoning trend.