The question I would have is what are your reasons for considering purchasing that small of a motorhome? IMHO, rather than buying a motorhome that short, go with a used pickup and a nice trailer or small fifth wheel that can be towed by a 1/2 ton truck. We downsized to a smaller travel trailer with only a dinette....ended up replacing the dinette with a nice Flexsteel Easy Bed/Sofa. Then, we decided to luck for a used gas motorhome. For a few more thousand than what you are considering dropping on the Vista, we picked up a 2012 Newmar Bay Star that has more room, more storage and checks in at less than 34 feet.
However, that may not be what you are looking for...but just really study the floor plan carefully and think about living in it for a week or more.
As to the price, all you can do is search the internet and see where the price range falls and after looking at it, try to get the best price you can. If you think the price is too high, don't be afraid to keep looking as there's always stuff coming up for sale.
2012 Newmar Bay Star 3302
Blue Ox Avail
BrakeBuddy Advantage
2015 Malibu
"Get busy living, or get busy dying."
Andy Dufresne, The Shawshank Redemption