Where can I buy the Maxi Cosi Leona online, I can’t find it anywhere!
The Maxi-Cosi Leona is COMPLETELY NEW and just released, it will take a bit of time for it to get to all the world's stores. Be patient, it certainly will (in a few weeks to months' time), as it's usual with all new releases.
If very impatient, I would suggest contacting any Maxi-Cosi brand distributor around you and ask to be informed whether and when will they get the Leona in stock. They will most certainly do so - they want to sell the products, after all.