So this just happened to a lady friend of mine. Steer clear of Firestone of 1192 Murfreesboro pike Nashville. She had spark plugs changed and was charged $34.99/plug on a 4 cylinder Honda Civic total price $210 plus tax. These spark plugs retail direct from NGK for less than $12. After chatting with manager he stated ""we pay more than retail for parts"" SERIOUSLY!!