I went glow plug shopping. Kragen auto parts didn't have them in stock, but could order them for $23/each and have them to me on October 5th.

I passed on that deal, drove down the street to an indy garage, asked the owner if he could find me some. He's charging me $16/each and is having them delivered by 5pm tonight. I may be able to find them cheaper, but feel that the convience is worth the extra few bucks.