As it's made part of Les Parisiennes only sold in the Champs-Elysées shop, I guess you have to call the shop and order it. There is free shipping for +300 €, at least inside Europe.
It's a beautiful, striking and high quality scent that I have once written the following about (though it's not the most fabulous of the Jean Paul Guerlain scents in my opinion):
Chamade pour Homme was composed by Jean Paul Guerlain in 1999 as a masculine version of Chamade from 1969 and originally sold as a romantic pair for Valentine's Day. Given that Guerlain is famous for the oriental scents, also for men, it's surprising that he with Chamade pour Homme chose to completely abandon the vanilla that is such a decisive characteristic of Chamade. He kept the central hyacinth theme but added bergamot, pepper, nutmeg and leather to end up with a spicy, leathery and almost bitter chypre. Not unlike the warmer part of the almost concurrent Coriolan, but far away from Chamade's sweet hay and blackcurrant. In short, this pair is an example of how very differently one can interpret hyacinth. It's said that women and men live on different planets – maybe this was what Jean Paul Guerlain had in mind while creating Chamade pour Homme. It's more likely, however, that he simply wanted to stress the difference between man and woman to let them unite in a so much more exciting love affair. Now Chamade pour Homme is made part of the collection 'Les Parisiennes'.
Family: chypre, spicy. Top notes: bergamot, black pepper. Middle notes: violet, hyacinth, green notes, nutmeg. Base notes: precious wood, vetiver, leather notes.