I have been calling all over town to autozone, advance auto, the Mazda Dealer in town, and i can not find anyone who has or will order the NGK BKR7E spark plugs for me. Mazda told me that they would be like $14.50 a piece which is rediculous. The ones from sparkplug.com are cheap, but shipping costs just as much as the spark plugs. Can anyone tell me how they got their plugs and from where?