Vines of Mendoza has...

1.) 40 wines I have only scene available before in Argentina
2.) Argentina wines classified by local growing district and not just "Mendoza"
3.) UNfortunately - A viscious shiping cost of roughly ten dollars per bottle.

Final verdict - If you are willing to throw down forty bucks a bottle for killer Malbec, sure - it makes sense. For the rest of us - the twenty dollar highly distributed big producer Malbec for twenty bucks makes more sense.