A spot price for West Texas Intermediate is a dollar figure for a barrel at a named place, on a named day. The St. Louis Fed publishes one such series, the Cushing, Oklahoma spot price.
A household does not buy Cushing crude. It buys gasoline, or it pays a fare that includes fuel, or it heats a building. Those prices move with the barrel on a lag, and with taxes, refinery margins, and local supply that the spot quote does not itemize.