I think it is usually about rewarding yourself with little reasonable priced things, and that involves several things - also it’s safe to say in any sort of ‘excessive’ hobby (that’s most of us on here) there’s a high chance we all have autism or some very mild disorder, to some degree or another (it can literally be barely noticeable in regular life or the polar opposite, in fact we are all autistic, it’s just ‘how’ autistic on a scale you are).
Browsing / buying / researching - we enjoy it usually, this can take a good deal of time…… 
Waiting for it to drop through the letterbox - we both love it and hate it 
Getting it ‘in hand’ - short-lived joy, maybe a a day, maybe a week - rarely longer (FW3a is an exception) 
Back to the first step. 
Also it is a fact that poorer people replace the things wealthy take for granted like several holidays a year, new cars,expensive watches, expensive toys - with little things, like flashlights etc on a budget they can afford.
We all reward ourselves, it’s just relative to income.