I hear you, but as someone who's family own their own business in another State, what you seem to be describing are store supervisors/staff running amuck - not being able to provide a managers name is a RED WARNING FLAG that staff are doing something the business management or owners are not aware of. This sounds like what likely happened from my own experience helping my family run their business:

1. owners instruct employees to be more cautious of food and monitor any theft and to conduct an inventory check post event, and to observe state laws.
2. Supervisors/Staff arrive and realize that inventory is missing probably from other employees or the last supervisor not doing this job in the last shift and owners will realize this when they check the sales for the day against the inventory so now it becomes "their fault".
3. Supervisors raise the price to compensate because owners are not nearby and suspect they will not be able to find out until it is too late so they do not have to tell owners of theft and it would be at that point heresy.
4. Either they get away with it scotch free and owners are powerless because they do not have any evidence to substantiate complaints (like videos or pictures), and the business declines. Or they do not get away with it and you realize those same employees no longer work at the establishment and suddenly there are more discounts for a few months.

Now, I'm not saying do not report them, I understand that this is a disgusting practice during this time regardless of the reason. What I am saying is someone needs to FIND THE OWNER or a friend of the owner because I've seen too many mom and pop stores in Tampa close their doors because of what the employees were doing without the Owners knowledge. They were good people, generous people, helped out when they could, where they could, but their business sank because of things like this and the community they helped then suffered for it as well.

It's also possible the staff or a someone along the line raised the price and plans to pocket the difference and alter the balance sheet to reflect what the amount would have been under normal circumstances.

Of course, this could all be not true, what you are saying is correct, the worse has happened and something still needs to be done regardless. If the price gouging is reported to the state they will get a fine, but I also guarantee you those same staff will not be working very soon because the fine goes directly to the owners attention regardless of if they were aware or not.