Not trying to "jump down your throat", simply just pointing out a fact and responding to the question as asked. Of course "SOME" people enjoy the idea of building their own batteries and are willing to learn or already have the skillset to do so, but not everyone, and for all we know this could...
Trying to compare bare cells to a full battery assembly is not really a fair comparison. They are obviously going to be much cheaper and no one will ever dispute that. When I was looking into battleborns in Canada, I believe they were around $1300 Canadian plus some pretty expensive shipping...