Hi, I once did something like that except that I expected the inspection costs to be my expense. It cost me $300 & I offered a low low price because the house was in 'original' condition, euphemism for unrentable, if I only knew it then.
Strangely or not so strangely, the family accepted my unconditional low offer over the next one which was $30K higher. I think they must have been afraid the contract would fall over.
You never know, you might still get the property. What'd you have done had the inspection revealed something wrong? You'd still walk away & cop the loss. so take heart, it's $750, a business cost. It sucks but unfortunately, some deals fall apart.
Good luck & I hope you still get something from it. PS: when I sold the dilapidated house above, someone said, obviously not aware I was the owner, 'it's a terrible house'. I still made $62500 in 18 months.
KY