For some time now, sauces in tubes, e.g. mayonnaise, mustard, tartare, have been stuck together in two pieces during promotions. I really appreciate the promotions on these products. What I don't appreciate so much, however, are the sticky tubes when you have torn off the promotional glue (you can stick it around on one tube --> recycling problem????, but the second tube has the glue on it).
You can do so much with the barcodes. It should be possible to grant a discount when buying two or more products or an even number of products. Just like it was possible not so long ago. Wouldn't that be nice?