Go to www.coleman.com. In search, type in Powermax and it will bring up the fuel you are looking for. 300g can. They have an phone # 1-800-835-3278. Called them and you can order directly from them. You have to buy a case of 12 for $36.00 plus shipping of $5 and change plus a haz mat charge of $15.00. That comes out to about $4.50 per can. Here in Austin, we are paying $4.00 per can plus tax. So the price my mail including haz mat is not out of line. Maybe you can get two or three together and buy the case.
Hope this helps