</font><font color="blue" class="small">( Why would anyone on a different continent want to pay to ship a used tractor to them.)</font>
Yes, I believe that there is no doubt this is a scam.
But I don't think that this statement is the proof. The (thriving) grey market tractor industry does exactly this, buying used tractors and shipping them to a different continent. There is enough profit to support multiple middlemen.
Does this mean that this particular transaction makes sense? No.
I knew a guy who was building a retirement home on Fiji- nice low cost of living in the tropics. Bought everything- building materials, hardware, fixtures- here in the States in the high priced San Francisco bay area, packed it into cargo containers, and had it shipped to Fiji. Cheaper that way, even for cement tile backer board! It is amazing how expensive prices can be in other countries, regardless of the income level.