The short answer is not at the point of purchase, no.In six months when/if a new appraisal reveals a bunch of equity, at that point it can be put to work to get you a better deal on the financing. 

They still must reveal all legally required information/disclosures.

After insisting on it they did and it revealed they had to repair water intrusion into the basement. 

This has changed the game a bit, but old arrangements do persist.Light finishes are typically chosen to highlight the quality and longevity of the oak strip flooring, that is, to reveal the grain better if it's more expensive quartersawn or rift-sawn planks, the lack of knots in the wood, the long length of the boards.

He was gone in 30 days.You have to love social media when they reveal all they have done & plan to do.

It must reveal extensive unknown damage in your inspection reports typically that can amount to fifty to hundreds of thousands of dollars.

This will give you an opportunity to back out of the deal, if the inspection report revealed something that wasn't to your liking

More will be revealed.  

. - Black mold under the roof (2nd picture, also reveals some green on the siding and pillars...a quick cleanup would help with that) - Clear lawn issues (5th picture, also shows a vehicle in the middle of the backyard?)

You spent $1300 on due diligence, and that due diligence revealed that this isn't the deal it was advertised as.