Final answer:
Perkin's purple dye was popular due to its cheapness and long-lasting color.
Step-by-step explanation:
The 'rage' for Perkin's purple dye was due to its cheapness and long-lasting color. It was much cheaper than natural color and did not fade quickly, making it popular among consumers. Additionally, it had a vibrant purple color that was highly sought after.
Learn more about Perkin's purple dye