I may be late with this reply since you already decided to pass on it. Not sure where you are located but as others have said that price could be very good or very high depending on the market for them.
Where I am, used carts in any drive-able condition are going to cost upwards of $1400. Add new batteries to it and you are at the sellers price point.
If you like it, and good used carts are scarce, don't be afraid to go for it.
My old buggy does just what I need it to and it totes me and my bride 8 to 12 miles every day. It was $1750 and then I added over $2500 in accessories. And it still has the 2013 batteries it had when I bought it.
I could put new batteries in it and sell it for, maybe $2500! Did I over-invest? Not a bit!