there is always a reason behind a low price and a higher one, so it's important to find out why. As I always say, arm yourself with knowledge; to achieve that, view more houses, talk to more people, ask more questions, do more reading and researches. It's not easy for anyone to tell all here with just a few sentences; no one would know what is what you do not know.
I would focus on the following:+ r1 C( U7 ^* y+ K
1. location 2. House type 3. Hardware and not software of the house 4. Exterior environment. % U7 W; C' s1 @& G2 }3 ? 5. Relative elevation of the lot 6. Front elevation of the house.