In my experience there is no reason to send any equipment in "just because". It's like getting a 'tune up' on a car when nothing is out of tune. These things, for some bizarre reason, make people 'feel better' but don't accomplish anything.
Hence, I just join CPS when I have an issue with a piece of gear that I want to get fixed. Then after the repair or servicing is done I let my membership lapse and don't re-join until the need for another repair arises. So I've joined CPS 3 times over the course of the last 9 years. I go with the $100 Gold Membership because I don't think Silver saves you much of anything (so why even bother), but Platinum would cost me far more in membership dues than what it would save me on repairs, so Platinum Membership is not worth it.
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"Your" and "you're" are different words with completely different meanings - please use the correct one.
"They're", "their", and "there" are different words with completely different meanings - please use the correct one.
"Fare" and "fair" are different words with completely different meanings - please use the correct one. The proper expression is "moot point", NOT "mute point".