What is your experience with the law of diminishing returns ?

First climber: Isn’t this something?! Here we are sitting on the top of Everest. What a view!

Second climber: Yeah, the view’s OK but we’re only at Base Camp. ⛺️

"law of diminishing returns" = wallet pain

Just wanted to clarify how I interpret "diminishing returns". Ergo, discussing generally a nebulous supposed universal phenomenon called "diminishing returns" with a subset of the population having a wide socio-economic distribution is fruitless, imo. 

The Sherpa is dead hauling the ____\\\\\ to the summit by towstrap...

 @david_ten Perhaps IMO less than PhD level Economics attainment, I find utility function science to be poorly defined.. because people ain’t all that rational

neverthe less , what is the Pareto optimal frontier between combinations of $1k or $5k power cords, ditto with amps, or perhaps a $6k amp w factory cord, or ( aghast ) a $6k power cord with gain....

ones mans optimal utility is anothers junk