Microphone manufacturers offer matched pairs for people who request them. Generally the only thing that's matched is output level for a given SPL so you can set up a stereo pair, turn both mic preamp gain knobs to the same setting, and go. A matched pair might be worth while when buying a pair of hand-made boutique mics. Since those have more hand work in them than factory-made mics, there's more room for variation from one mic to the other.
The alternative is to listen to stereo pair, and if the stereo image is skewed to one side, you just adjust the gain to center it.
So, no, save the $100 if, most of the time, you'll just be using them as two mics, maybe on the same source, maybe on different sources.