If it were my deal I would say pas simply because I've done enough remodels to know that you could easily uncover a 5,000 hidden cost (Or way More) I'm not trying to scare you off but my risk tolerance could be way less than yours. 

We invested cash and took on traditional investor loans.I uncovered that there was a bit of cash out financing going on to free up money for more houses.... essentially pulling out all the created appreciation profit, and leveraging it to buy more new homes.

To which I spend hours at a time combing through the nitty gritty of homes until I uncover perfectly matched criteria "winners".

It's unfortunate that a buyer would have no other remedy apart from legal action in the above situation, but I agree it's unrealistic to expect inspectors or agents to perform heavy lifting / moving of furniture to uncover every last defect.

Does homedepot/lowes have these sort of things , or is it more specialised supplier ?

Sure it might be useful but he/she is not going to reveal any real goodies anyway; you need to uncover everything, the  good and bad, about the building and the finances for yourself.

In this case, I feel that if I am the one coordinating the repairs and fronting the capital to do so, as well as assuming risk of things not uncovered by a standard home inspection that may arise, then the price should be a fair bit lower.

The home inspection uncovered that the heat pump, a $5k replacement, was near the end of expected life.

But I learned that there is lots uncovered and I also wanted something that has more details.

Curious to know if other investors have had experiences where they acquired a property and realized a huge expense that they otherwise did not expect or uncover during due diligence?