I have not seen those. The linked page quotes the price about $125. That doesn't include the stove pipes and spark arrestor. If you add those it is $190 and the 4 piece stove pipes aren't long enough to extend through a standard wall tent stove jack, so you would need even more pipe.
The Kni-co packer Packer Jr is similar in size (actually a little bigger, which is better unless you are backpacking the thing) and the Kni-co package deal with stove, pipe and spark arrestor/damper is only $154.
Those other stoves are made of ammo cans and I would suspec the Knico stoves are much lighter for their given volume as they are made of a lighter gauge steel.