Those prices don't sound that much cheaper than what I paid at Autozone. I think I paid about $15-19 for a similar quality cap, there best quality that is, brass not aluminum, unless you buy Accell parts thats is. There cheaper cap was about $12 as I recall. And as I recall the one bought I seemed higher than I was use to paying for their top quality caps already. I think they have gone up on there prices.
Could be a promotional thing, selling them at near their cost to generate traffic and other sales. Called a lost leader in marketing terms. K-mart made the strategy famous. Or perhaps someone made a "0" mistake and ordered a ten year (1,000,000 instead of 100,000 of them) instead of a one year inventory, and they need to move a lot of them fast.
One thing is for sure, most of them are made in China, or nearby for probably less than $0.25 a set.
The "Standard Motor Products cap is about $35, and the AC Delco one is $25" you qouted sounds outragious.
