The nib unit is a screw fit. I recommend use of bottled ink although it can take cartridges.
The cost of the pen reflects the high cost of materials. These pens are not made from a kit. This pen is 14.0.Long and feels great in the hand. The item "Fountain pen, hand made in Acrylic" is in sale since Thursday, April 4, 2019. This item is in the category "Collectables\Pens & Writing Equipment\Pens\Fountain Pens\Other Fountain Pens". The seller is "shekhars123" and is located in Oakham. This item can be shipped to United Kingdom, Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, United States, Canada, Norway, Mexico, Switzerland, Bermuda, Guernsey, Gibraltar, Iceland, Jersey, Liechtenstein, Monaco, Ukraine.