Originally Posted by Expatriate

I'm pretty sure my cost will be around AU$10, with shipping. Depends on the quantity, the exchange rate, and the weather. That's for the little jobber that takes a threadless cartridge. The advantage is that the cartridges are heaps cheaper than $8 each. I'd like to sell them for 1/2 that, but unless I'm just buying for myself, I need to order enough to make it worthwhile. And yes, turns out I do have a small stash of threaded cartridges in my tool box.