High-end department store Hanwoo beef sets have seen a double-digit increase in sales despite high prices and interest rates, due to a strategy targeting 'cherrysumers' and a recent drop in Korean beef prices. The success of Korean beef sets is attributed to their perceived cost-effectiveness compared to other gift sets, which have seen a price increase of 20%. Customized sets and strategies like lowering prices while changing the type of meat have also contributed to the increase in sales. Supermarkets have seen an increase in sales of Korean beef sets priced around 200,000 won, and high-end sets have also sold well.