Thanks for your reply. There was no mention to sales amount on agreement.
I didnt audit his books, but he showed me some recipts of daily income, and they were in range he said, after burchasing the store, we found a broken cash register, and i think he used it to print those fake recipts.
I dont think the economy impacted the buiness, this is a retail store, people still need to eat and drink.
I can send the agreement if that would be helpful?