Birmingham inks are not available in my part of the world, consequently I had never heard of them until recently reading about them on another blog. When I visited the website I was impressed with the range of colours available (59 on my last count) and the price. The Birmingham Pen Co. sells other inks as well as their own, the proprietary inks retail at $US11.99 for 60ml, $US7.99 for 30ml and $US1.19 for a 5ml sample. Irrespective of the volume purchased they are very reasonably priced ranging from 20c/ml for the 60ml bottle to 24c/ml for the samples. The other thing to mention before I forget, postage was very reasonable and I had all my inks within a week (Pittsburgh to New Zealand). I have nothing but the highest praise for all my dealings with the Birmingham Pen Co. and their exemplary customer service.