Mark Shackelford turned what would normally be a stressful and difficult buy-sell into a seamless and enjoyable process. He was always on top of deadlines and kept us on schedule, so we never had to worry about something slipping through the cracks. His calm and professional demeanor throughout the process made for an amicable exchange between the buyer and seller. I would recommend Performance Brokerage Services to anyone looking to buy or sell quickly and efficiently.