Yeah I was asking for the exact seller.
I ordered a few things from French sellers on eBay in the past, and they all arrived to me in 3 days (I'm in Spain) except for one seller that sent items via PostNL's Paris branch in order to reduce shipping costs, and these took 2-3 weeks to arrive. I'd wager there are more sellers that do something similar.
Thought I'd share this info in case you were considering to send the cartridges you have before receiving that French Ruby, because I think it might be a good idea if Nintendo is likely to stop accepting carts soon.