+1 for the above post, try caravan parks for the big badass cylinders at decent prices,
caravan parks with residential vans normally do bigger cylinders, and are reasonably priced
you don't even need the match with this cooker though, its a piezo spark ignition!
Oh and get a propane (red bottle reg) AND a butane regulator (blue bottle reg), post SHTF, if all you can scavenge is butane bottle, you are still good to go.
oh and stick with propane as much as poss, butane doesnt work in winter! (higher boiling point!)
and yeah it should work, try ebay for regulators
Sorry, me again lol add this
http://www.amazon.co.uk/21mm-Butane-Regu...+regulator to your basket, only a fiver, but giving you an extra fuel source should you need it in an emergency!
in some cases, those with the least to say, say the most.....