Too many variables to say for sure. I do not like the HT1250 and would never own one, but I also know the what I can get the HT1000 and visar for as well. New batteries do not matter as once they are used, they are used and are not "new". I would not be sure how old they really were and how they had been charged.
Assuming both the HT1000 and visar are "D" revision and 16ch, have a GREAT battery from someone I trust to know how to charge them the right way, then the MOST I would ever go would be $100 each for those two. A charger would be a must for the visar but not for the HT since I have a few (and Impres too).
HT1250s are still a current item, but as I have said, I would never own one so I would not place a value as high as some would.