"Is 60 mpg an unrealistic MPG claim?"
If you think that claim is questionable, check out
this ad: "70 Miles per gallon Honda Civic VX 3dr hatch 12k miles - $9500"
I think the 60 mpg claim is a little excessive, but only a little. There are many VX gaslogs on this site. They show that most owners can achieve 50 mpg without much trouble. Some owners beat 60 or even 70, but I think that takes very skillful driving.
There's some VX-hysteria going on, but I think it's happening for a reason. As far as I can tell, it's the highest-mileage car ever sold in the US, with the exception of hybrids, diesels, and the 3-cylinder Geo Metro XFI. At least since the EPA started measuring MPG. This is aside from the fact that Civics, in general, are very popular, for all sorts of good reasons.
"Both have said realistically they get mid 40's max"
That's too low. I think there's something wrong with the car and/or the driver. Here's a hunch: they're driving with bad O2 sensors. The VX uses a special kind. $200-$400.
"isnt that car like 10k when brand new?"
MSRP was $11,890. But I don't think that's the right benchmark.
But I think $4900 is high, given that the car has 195k, and is probably not rust-free, since it's in Ohio. And fixing the A/C is going to cost a lot more than $50.