The biggest warning about buying machines on eBay is to make sure the seller knows what they're doing in packing them. Some arrive smashed because they were simply put in a box and shipped.
They have to be packed securely inside the box-not in styrofoam peanuts but wrapped in bubble wrap and stuffed in with cardboard until you cannot budge it inside the box. Then have it double boxed.
The packing has to be done as if you expect it to be dropped off a 20 foot cliff.
And make sure the seller insures it!