Last month, Alan of Handy Computer met Ben the sale representative of Computer Accessories Company to discuss the purchase of 10,000 sets of wireless mouse for computers. A special discounted price of HK$60 per units was agreed between Alan and Ben. The goods would be delivered within 21 days. Due to the special price offered, full payment must be made before the delivery. Ben showed Alan two sets of wireless mouse he brought with him, Alan checked and tested them with his notebook computer. After testing the two wireless mouses, he was impressed by their appearance and quality. Ben told Alan it was the best deal in town, and he promised that Alan can inspect the 10,000 pieces at any time before the delivery. Alan did not bother to do so. A week later Alan paid the full amount of HK$600,000 to Computer Accessories Company. On receipt of the 10,000 sets of wireless mouse, Alan found that their quality was inferior compared with the two wireless mouses tested. Furthermore, Computer Accessories Company refused to refund the HK$600,000 paid by Handy Computer.

Explain a relevant case similar to the case above => explain briefly