It is profitable to buy on a campaign. Today it is not necessary to run to the store to find out if there is such an opportunity. You can use the Internet, go to the site of the supermarket and familiarize yourself with the information you are interested in. Usually, the goods that are offered at discounted prices are placed in the appropriate section. In the "Tavria" itself in Mayaki on Bogachev 94, it is also easy to find promotional products. What it can be:
ice cream;
sausage;
processed cheese;
doughnuts;
butter;
nectar;
crab sticks.
You can make a delivery directly from your cell phone. Make sure you have access to the Internet and have entered the correct shipping information.