You should only need a bottle of gas. Though you’ll need to check which regulator the Koda comes with. It’ll probably be clip on, rather than screw on.
Ah, in that case I'll wait. We have a car for the weekend, so would have preferred to get a bottle before I need to bring it home by bike. But I'll find a way.
I've found a German webshop stocking a Koda, so I've ordered that. They weren't very clear on what's included, will I only need to get a gas bottle?