@lavender87
Thanks for the answer. The problem is, I'm not even sure if it is possible for a live plant from the US to pass our border. I have recently tried ordering some pomegranate rooted cuttings from Italy and it worked, but I'm not sure that it would work in general from any country. The shipping was already expensive enough for me and I can only imagine that the shipping for a significantly larger package from the US would be too much.
I do have two other jujube trees so this would not be a problem. I'm actually living in Belgrade, Serbia, but I've grown up on the Montenegrin coastline, and wild jujubes are everywhere there. In fact, it might be a kind that you don't have in the US. It is small and oval.
http://www.zenasamja.me/images/full/1455.jpg I remember trying once a large jujube variety (don't know the name, probably Li), and it was inferior to the little wild one. Very bland in comparison, with less flavor. Not sure if this is a general rule, as I haven't since tried any jujube variety other than the good old wild ones from Montenegro. I have two Lang trees in Belgrade, but I only planted them this year.
I know that grafting also has a low success rate and I never did it before so I figured I would have more luck trying to root cuttings. Also, cuttings should be easier to pack in a small package that would probably pass the customs without any issues.
And yeah, sure, I would definitely go for the superior variety if possible.