How to know if you're getting a good deal with new construction

[Ray Vernon]

Hey everyone, im hoping some of you with more experience could share some wisdom. This would be my first property i'm purchasing using a conventional loan. I plan to stay in it for a year and then use it as a rental property. 

Link to home

I'm wondering how to know if you're getting a good deal when it comes to new construction. The home was first listed for $340,000 then dropped to $328,000. In person, the realtor said she may be able to get it down to $300,000. But i noticed on the MLS, the prices of other homes sold are listed with price ranges from $280k to $340k which doesn't help with comparing .

It seems like a steal from the off the table price cuts but it also makes me question why.

What are things you look for to determine a good deal?

Thanks in advance, kindly.