I've made some pretty big purchases on E-Bay and come out okay. But it's always a risk. I once bought a used tool off Amazon from a seller in another state. It arrived busted up and I had to send it back. While he did refund my money, I had to pay to ship it back and it was a hassle. Now I buy tools from a local brick and mortar store. That way if there's a problem, I can drive a couple of miles and just return it. When it comes to motors, there are hundreds of builders. My motor head neighbor says your best bet is to just buy a crate motor from the local Chevy dealer. I guess if you live in South Korea this could be a problem...
