I bought this MP 40 six months ago and it has been working perfectly and still is working perfectly!! I have the original box and the receipt for this powerhead also! The manufacture date is April 2013, but as I said before, it has only been running for 6 months. I am asking $250 for it, but I will not go any lower than that. I will also pay for shipping and insure the package for the full $250. Text me at 850-708-5044. Thanks!