This might be a cliche but it’s worth what someone is willing to pay for it. If you’re not willing to pay listing and no one pick it up at listing, then it’s not worth $300k. I have no idea if it’s worth $280k. I don’t think anyone can tell you that without lying.
What I do know though, is that at listing price, assuming you put 20% down and get a 30 year fixed with 0 points, we’re talking monthly P+I of ~$1100. Tax should be about $270/month and insurance <$100/month. So, we're talking about PITI of $1500/month. Comparable rent is probably around $1700/month. This is before any tax deduction you might get. So, as a primary resident, it sounds like a decent deal to me.
The area is Ok. Not the best in MM, but that's also reflective of the price.