I think this depends upon the individual owner(s). In my case, I perform one to three times daily, set up, tear down and transport the equipment, and every piece of equipment I own is in like new condition. No scratches, no dings, no dents, and everything works perfectly. The only indication of wear is on the protective cases, which have some minor abrasion from sliding the equipment in and out of the van and placing it on the Rock & Roller cart.
In contrast, I have friends that perform about half the number of jobs I perform and their equipment appears as if it were dragged behind their car at the end of a chain. If they owned a piece of equipment for a day, I would be reluctant to purchase it from them.
Cheers,
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)