I am watching a 50 Amp Portable RV Smart Surge Protector by Progressive Industries for my Toy Hauler it is on eBay but before I bid has anyone used one and what did you think about it. The price is only $100+ shipping and I see Campers World want $300+ for one. I was wondering if this is the real deal or should I stay away from it. My buddy had a power surge in his motor home and he is finding all sorts of items that need replacing, inverter, TV, Microwave even had his answering machine in it hooked up and it took that out also so I guess they are a good idea. thanks