You can buy Xikar and Vector butane on amazon in singles or 6 packs.
I ended up taking my Xikar back. 3 fills and it was only good for 5 bowls on a low setting. Traded it for a a Xikar Pipeline and already wishing I had just bought an Old Boy. The Pipeline is great, but the Old Boy just keeps calling my name.
If anyone wants a Xikar Pipeline with leather pouch just let me know. It's about to go to BST to fund an Old Boy :)
I have not failed. I've just found 10,000 ways that won't work. - Thomas A. Edison