This special edition ink by Montblanc is unfortunately no longer available but you may have some luck getting it from a retailer who is not out of stock yet, or an owner who wants to pass it on.
This fountain pen ink is more of an olive or army green than the name "Palm green" would suggest. With a medium dryness, the ink has surprising shading and no bleed through at all (there is a little ghosting but I'm using cheap paper and I consider ghosting to be a good thing).
The bottle it comes in is standard for all of Montblanc's writers edition inks. It has a capacity of 35ml and goes for about 20 dollars. Pretty expensive for a bottle so small, especially considering you can get similar looking alternatives for much less of the cost like Noodler's Army Green.
I find the Montblanc Writers edition ink bottles don't look as good as the boot-shaped bottles of the regular line and the cap of the regular line's bottles are higher quality and more interesting. This bottle's cap is the same as the one on Diamine and De Atrementis bottles with the exception of the Montblanc glacier logo. Montblanc is however more creative with the labels on the writers edition bottles adding aesthetic value overall.
It performs well on cheaper papers like most of Montblanc's inks and as I said, has no bleed through at all.
If you missed your opportunity to buy a bottle of this ink, I wouldn't be too disappointed. While I do enjoy it, there are cheaper alternatives out there that may serve you just as well if not better than Montblanc Daniel Defoe Palm Green.