Looks like a Marshall 50 Watts clone and it's more than a bargain, it's a gift. Check the valve for the first channel, it's certainly dead and like @gary mac wrote, it's a matter of life to fully discharge the capacitors before putting your hands in it. AND as those filter capacitors are double capacitors, discharge both parts for your own safety. I had a surprise one day as the junction wire between the two parts was broken but still contacting, so one part was still fully charged : my soldering iron still remembers it as it made the earth and a nice flame with some smoke...