Why do the delivery costs of woofers and tweeters vary among the four options of case 10-1 of supreme sound explosion?

The delivery costs of woofers and tweeters in case 10-1 of Supreme Sound Explosion likely vary due to factors such as the size and weight of the components, the shipping distance, and the chosen delivery method. Heavier or bulkier items typically incur higher shipping fees, while expedited delivery options may also increase costs. Additionally, different suppliers may have varying shipping rates based on their logistics and handling procedures, contributing to the overall price differences.