Guys, I normally charge my MBP, not using the long cable that originally came in the box. Rather, I've been using the brick and somewhat embarrassingly when moving the couch around, I banged the white power brick and the prongs themselves got damaged. Not wanting to pay full retail price for a power brick, I'm simply wanting to purchase the little U.S. adapter on the cheap. Any guidance is genuinely appreciated, sincerely. I'll welcome any avenues; eBay, Craigslist...just not back-alleys.