When you're ordering iridium NGK's for your supercharger install, yes they are that much cheaper. For 16 plugs (late Hemi) with shipping and S3.64 state tax it was about 95 bucks from Rockauto. Off Amazon, with free shipping they were $107. From O'Reilly's local, they were 9.64 ea, plus tax and still had to be special ordered. So from $95 bucks to almost $160 I don't think I'm being an unreasonable cheapskate.Is it really that economical to buy spark plugs at Rockauto………………………...considering what you may have to go through when they send the wrong ones? Surely it isn't that much cheaper.
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