Paypal, $, check, or M.O. is OK – (just have to wait for check or MO to clear). I will also accept US Postage Stamps in the largest denominations necessary to ship the item if you prefer to not send cash and the item is shipped USPS.
I never used the stove myself, got it as gift some time ago - GAZ makes their own bottled gas cylinders - available at Big 5 Sporting Goods and other places I'm told.