Group 1 - The holiday gift category experiences significant price increases as New Year and Spring Festival approach, with items like tea, alcohol, and snack gift boxes seeing prices tripled due to packaging and presentation rather than content [3][5] - The profit margins on gift boxes are notably higher than on bulk items, as consumers are purchasing for social status rather than necessity, leading to increased demand and higher prices during the holiday season [5] Group 2 - Everyday essentials that are used frequently but purchased infrequently, such as tissues and laundry detergent, also see price increases as retailers adjust prices at year-end, causing noticeable financial pressure on consumers [7][9] - Some products employ a strategy of "shrinkflation," where the quantity decreases while the price remains the same, making it difficult for consumers to notice the price increase over time [9] Group 3 - The restaurant and takeout sector experiences price hikes during the year-end due to increased demand from gatherings and events, with delivery fees rising and discounts becoming less frequent [11][13] - Consumers have reported that the same meals can cost significantly more during the holiday season, with restaurants often reconfiguring meal options to obscure price increases [13] Group 4 - Seasonal items, particularly winter necessities like down jackets and heating appliances, see substantial price increases as demand spikes in colder months, with consumers often waiting until the last minute to purchase, leading to higher prices [15][17] - The home appliance industry follows a pattern where heating products are more expensive in winter, with consumers willing to pay premium prices for comfort during cold weather [17] Group 5 - The overall trend of price increases at year-end is characterized as a cyclical fluctuation driven by changes in consumer demand rather than a general inflationary trend, highlighting the importance of timing in purchasing decisions [19]