I filled the beastie this morning with Camlin Camel Royal blue ink, and either the various reviews are wrong about its alleged 6-ml-plus ink capacity, or the eyedropper included in the package (from Andy's Pens - www.andys-pens.co.uk/gajendra.shtml ) is horribly mismarked. At 5 ml by the eyedropper, the barrel was ready to overflow.
The pen writes nicely and balances well unposted, though the ink feathers pretty badly on cheap paper.