1500 bucks is starting to be in the realm of real money for most folks, so unless this amount constitutes your pocket change
i would walk away from them.
without a complete charge and a capacity test, how can you really tell what you are getting?
you are taking his word for the condition of the batteries, and i don't like taking anyone's word on batteries to start with.
my vote is to walk away, maybe they are ok, probably many/most are not
really won't feel like a good deal if most are various stages of no good, and those that are ok turn out to be of questionable
lifespan.
this reminds me of a crown battery for a forklift, the guy that had it wanted 1000 dollars for it. sure it was a 3000 dollar battery about 18months prior, but when i asked about the charge condition he didn't know,,, it had been sitting out in a field over the winter.
telling him dead batteries freeze seemed to be lost on him. yes i walked away, actually before i even drove out to take a look at it.
some folks have an inflated sense of value and an rather deflated sense of what it takes to maintain batteries in good condition.
leaving them set for god know's how long is not maintaining them in good condition in most books.
bob g