Anyone have experience with the Jihnao 9019 pens?

They have some interesting characteristics. They are the size of big Montblancs and King of Pen. They use an enormous #8 nib (M, F & EF), and they have a cartridge converter that seems to hold a tanker truck of ink. Reviewers all seem to view them favorably --- and you can get one for less than $15. I'm going to order one and see. What the heck, it's that or a pizza!