Hi,
I am a currently a year 10 student and the need for cheap, reliable ink is by far my most important requirement for any ink. Here the Schneider ink shines, running smoothly with no flow issues on cheep file paper, without feathering or bleeding through, and drying quickly (<10sec). It is available cheaply of eBay, selling for $6 including postage for 30 cartridges. With a sturdy construction and a nice (nothing flash) standard blue (similar to the new Shaffer skrip), these cartridges are a winner for anyone who consumes a lot of ink and is on a budget, especially if you are not fussy on the colour.
P.S. I purchase these cartridges from an eBay shop called Ink4pens
Regards Rohan
