LOL, I don't think there is such a thing as "too frequent oil change intervals".

Knowing what's going on inside your engine through oil analysis isn't a bad thing, but is overkill for general automotive applications. Where you see this used regularly is in heavy equipment and industrial environments, where engines run in stationary, extended, and severe situations. For the engine you drive down the road each day you just can't go wrong with a 3000 mile oil and filter change. It's the most inexpensive maintenance insurance you can find with the least amount of effort.

Everyone's out to make a buck though and $22.50 doesn't seem like much, although I'd rather spend it on 5 quarts of Mobil-1.