You can get your Gourmet Pens Pink ink at P.W. Akkerman in The Hague.
In 2013-2014 I did a series of weekly videos entitled The Inkcyclopedia. In every installment, I would show off an ink in quite some detail, using several nibs and doing a couple of tests with each ink.
I have decided to make this series of videos available on my own YouTube channel now, so that (new) viewers can watch them there. Bear in mind that these are older videos, so their quality is not that of more recent videos.
Enjoy, and find an index to all inks covered in the Inkcyclopedia here.