Look out! False tomatoes on the store shelves! How to avoid fraud?

Some (luckily not all!) sellers are just looking for an chance to enrich themselves at the expense of customers. By the way, they usage various bad practices that frequently do not have much to do with honesty. Fortunately, we are protected from these wicked ones by experts who indicate what to do to avoid unpleasant surprise. Even though it's hard to believe, they're cheating us on... tomatoes!