This huge pen can be bought from Cult Pens for £2.48. It is only available in black.
The OHTO Fude uses a 1.5mm rollerball tip that not only lays down a wide line but also a lot of ink. You are actually advised to clean the tip of the OHTO Fude before every use and I found this to be good advice. If you don't, ink starts to build up around the nib. The ink itself is a Jet-Black Pigment ink which is both water proof and fade proof. I haven't tested either of these two statements but if you have, please let me know how it went. I did find the drying time for the ink to be pretty long. This could be simply down to the fact the OHTO Fude lays down that much ink.
My writing style is pretty small and I found I had to adjust this a lot (upscale my writing size) to accommodate the OHTO Fude. If I tried to write normally I found my words badly smudged. The nib/ink combo does make the writing experience very smooth with a consistent flow.
I think the OHTO Fude will appeal to a niche market. Personally I find the line width to be way to thick for me.