Final answer:
The original price of Shane's jeans cannot be determined with the information provided, as key details such as the discount rate or final price are missing.
Step-by-step explanation:
The original price of the pair of jeans that Shane purchased is not explicitly given in the information provided. To determine the original price, more details are needed such as the discount rate or the final price after taxes and/or discounts. The totals provided, ranging from $18.75 to $678.25, are associated with different purchases and cannot be directly linked to the price of Shane's jeans without additional context. In mathematics, answering questions about discounts or sales prices typically involves knowing the original price and applying the discount rate or knowing the final price and working backward to find the original price.