Which detail best shapes the central idea that the cost of a product fluctuates for consumers?

"Two of the biggest factors are sales taxes versus value-added taxes, and perceived value."

"These extra costs to businesses get passed along to the consumer in the form of higher prices."

"So they charge taxes on items sold. This is called sales tax, and is usually around 7 percent of the original cost."

"Most consumers look for the best quality item for the lowest possible price."