$300/kwh seems to be the sweet spot right now for off the shelf ready to use batteries. It is way too high in my opinion, but people are paying it, so I don't see the price coming down. Based off my original purchase I have $150/kwh in my head as the fair price for LiFePo. It seems like there is a pretty good agreement amongst the sellers to not cross the $300/kwh line, but sooner or later someone is going to flinch, because that price is artificially high.
I guess what I am trying to say is if you need a battery right now, and you have to have something turn key (not DIY), that battery is in the same price range as all the others similar offerings (not a good deal, not a bad deal).