Who ever used 'Mediterranean' as a strain name shouldn't have done so.
As for ebay, it would be more an origin name - the tree is there - but even that would mean nothing as it could be in Spain, Algeria, Egypt, Greece ... Turkey
It could need caprification or not ...
If the seller was fair, he would have showed his own photos of ripe/unripe fruit and photos of the full tree.
I wouldn't give it a try.
Now, if you are a collector and want to take the chance, you could do it .BUT as the procedure for importing legally that material to your home is not the easiest ...
The last choice is yours, but you should probably stay away from that offer... If you're lucky, USDA have beautiful ladies as inspectors ... and worth the visit :)