Yes, I too thought the price info seemed way off. He says he paid about $8 per cylinder four or five years ago and they've "gone up a little bit".
I'm currently seeing two-packs of the Flame King cylinders on Amazon going for $35 (US) right now and the kit (refill adapter, stand, and one cylinder) is $62.
At this point I'm only seeing the Fuel Keg ones online at Menard's (the home improvement store in many midwestern states). The cylinder is $18 but if you don't live near a Menard's you have to pay $9+ for shipping. The kit (refill adapter and stand legs but no cylinder included) is $30 plus $9+ shipping.
I see there's a Fuel Keg page on Facebook where someone asks about buying them on Amazon and the reply from Fuel Keg is they will be available at all retailers by the end of Q1 (presumably the end of March). It will be interesting to see what that does to prices.
Side note: As far as disposing of the throwaway one-pounders, a few months ago I went round-and-round with my county's trash-disposal authority and with my local state park about them. When I called in to the trash-disposal folks, the clerk told me they had no way of handling propane cylinders and suggested I call my local Agway as they would take them. Agway said they'd take 20-pound cylinders (for a $2 fee) but not the one-pound throwaways. I figured my local state park had to deal with campers leaving them so I also gave them a call. The answer there was they don't take them from outsiders as they have to pay a fee to a local hauler to dispose of them.
For some reason I went back to the web site for my county's trash-disposal authority and I ran onto a page about disposal of pressurized tanks. At the top of that page, there was a statement that tanks containing propane or helium couldn't be left in the trash because of danger of explosion. But half-way down the page there was an exception.... specifically for one-pound propane cylinders: "
Empty 16-ounce propane canisters can be disposed in the regular trash. To empty a 16-ounce propane canister, it must be used on a grill, lantern, or other device until the device turns off because there is no fuel left in the canister."
Still, I wanted to be completely sure I wasn't putting anyone at risk so I ordered a pack of
valve removal tools. I connected my propane torch to each cylinder to burn off the little bit of remaining gas fumes and then removed the valve from each. I wrote 'VALVE REMOVED" on each with a marker pen before trashing them.
That of course doesn't help when traveling. I occasionally see cylinder disposal boxes at state or national parks. I saw them at Waterton Lakes National Park in Alberta last Fall and was surprised to see that the pallet-sized, meter-high boxes each had 50 or more cylinders in them.
