Well it sometimes a matter of common sense too. As both parties benefits from doing so. Yes the one parting is making more money but in the long run they are actually helping the buyers too.
It not only the hobby field either that this occurs in. When I work in office equipment repair business and I started repairing office calculators. You know those things that are built in nearly cell phone and computer now were once very pricey; some were as high $2000. Even then we would buy new machines just to strip them for parts as the OEM were ridiculous on replacement parts pricing at times. I remember one particular calculator that was retailing 100 usd had printer the manufacture wanted over 300 usd for the replacement printer. Funny thing we were only paying around $50 for those $100 new machines wholesale. We actually made several hundred dollars per machine we stripped for the parts and were able to keep costs for customer within reason.
Many us probably have seen where a new push mower is one price but if you need a new replacement engine it costs nearly double the price of the new mower. Personally I strip more equipment for parts than I fix up for resale. THis mainly because customers are not will to pay a decent price for an used mower or handheld even when it has been refurbished.
