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Having said that, on both Reverb.com and ebay, I can't find one. But, I can find a Ketron MidJayPlus player, used, for sale. It's in France, but I don't think there would be any issue getting it sent over.
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I'm an American expat living in France. I don't know about larger packages, but it took TWO WEEKS for my U.S. and Arizona taxes to make their way from France to the U.S., and that was with expensive postage and tracking ($5 each).
Inside of the E.U., used products can be shipped without incurring 20% (for France) VAT. When I shipped my goods from the U.S. to France, I paid no import duties after certifying that nothing was newer than 6 months. Nothing was, because the brand new G&L Fullerton Deluxe Fallout bass that was included spent more than six months in transit. The shipper picked up my goods on the 1st of March and delivered them the following October.
If shipping via ship is used, you're looking a several months. If shipping via UPS, for example, you will pay a LOT more.