there should be a law forbidding the manufacturers to sell products in double walled containers and/or air inside

Come to europe, most of these are prohibited here. The "EU-Lebensmittelinformationsverordnung" prohibits among other that: "the shape and size of packaging give the impression that it contains a much greater quantity of the food than is actually the case"

i dont even understand what is the point to do that when you can easily check that and see their sham. that kobe beef is just mental.

I worked in retail for years and the night before there was a sale we'd go through the entire store take off the old tags and replace them with tags that were 1 to 2 dollars more. I stopped working in retail and I double check tags and take pictures through out the year, so when something says it's for sale I can pull out my pictures and double check, doing that has saved me so much money.
When you call out a company for this they will give you the item at a cheaper price.

Not Kobe beef. Kobe beef has to meet the following criteria:
Tajima cattle born in Hyōgo Prefecture

Farm feeding in Hyōgo Prefecture

Bullock (steer or castrated bull)

Processed at slaughterhouses in Kobe, Nishinomiya, Sanda, Kakogawa, or Himeji in Hyōgo Prefecture

Marbling ratio, called BMS, of level 6 and above

Meat quality score of 4 or 5, yield grade A or B

Carcase weight of 499.9 kg or less.

Okay, so the US does not recognise the Kobe beef copyright and any old sh#t can be marketed as Kobe beef.