Robert, at those prices...
BUY THEM ALL if they are in any kind of reasonable condition. You should at least double your money and probably more if you bring them back to the U.S. someday. Just be sure to do your Customs form 6 in advance of your return so that you can get pre-approval to import your Curio & Relic firearms.
What a lucky find!
Here are a couple of recent photos posted by members of the class of Luger you are describing:
Keep your head down Robert... That is likely to be a very hot part of the world in the next few months... and I don't mean the ambient temperature.