The guy in that video suggested it.
The kit itself is under $100. The barrel can be had for $50 or less. The needed pipe and parts would be significantly more.
However, in regard to preps, heat in the winter (for colder climates) is vital.
But it's pretty compact and portable. So whether for your current home or a BOL...this seems to be a nice heating package so long as you're handy with a reciprocating saw and a drill.
What are your thoughts?