You can buy them individually - not sure if they are on sale in the store right now - that was the internet price. They come both straight and with a 90 degree bend in the connector. 119 motor spark plugs are so deep I have to tape a popsicle stick on to the wire. I'm sure they are meant for temporary service, not for driving around. One thing I've noticed is that they don't all have the same brightness, and it doesn't necessarily reflect differences in voltage. In other words one would be brighter than the one next too, and I would try to read something into to that, but switch them around and the brighter one stays with the tester, not the cylinder. But they work - they tell you if there is a spark. I guess you shouldn't expect too much for $2.