"Shopping madness" refers to a situation of chaotic and excessive shopping, often characterized by frenzy, impulsive buying, and a lack of rational decision-making. Full definition
Secondly, I hope you're not going to look at shopping madness until well past your turkey coma and apple pie. (preppypanache.com)
We'll bring you all the best iPad deals on Black Friday itself, but to ensure you're fully prepared for a day of shopping madness here's how to make sure you spot the good deals and leave the bad ones well alone. (techradar.com)