Thank you so much for your help,
I contacted them to ask for their current stock and I'm still waiting their answer...
(according to their DX220MAX webpage, it should be at least one in stock, but I prefer to be sure since some merchants do not follow in time the right number).
I hope that will turn to something good to me !
OKay, thank you for this important information, I will wait until next monday to see what are my others options...
But if, thanks to precious help of
@behemothkat, I would maybe soon be another one lucky owner of the DX220MAX (as you), I really think all will be alright to me for playing my music from the best possible way when on the go, and hope that will be for a long time !