Lol, I buy things when I want or need them, the cost is irrelevant if I can afford it, I always rememebr how much it costs, teherabouts, if someone asks, but I pay no heed, Money has the value for what it can get for you, eg, sopend a few hundred on a camers and get thousands of hours of enjoyment, I think the hours of enjoyment far out way any financial outlay.

My Laptop cost 1200 dollars, I have had it for 3 years at approx 11 hours use every day 356 x 11 = 3,916 hours /1200 = approx 32 cents an hour - not bad enjoyment time, 
My computer has paid for itself over and over :)<div class="pull-right"><a href="/@hive.engage">![](https://i.imgur.com/XsrNmcl.png)</a></div>

It's a great behaviour to not to cling to the monetary value of the  stuff and forget it. But still, when I fail to optimally use something, I regret for its opportunity cost ...like, what if it was owned by someone else, may be, it could serve the humanity better. Also, my thoughts go toward the cost of environment, natural resources and human labour that went into producing that stuff which will get insulted if we don't put that thing to use to its full potential. So there are several facets but not bonding ourselves to these materialistic things is the path to true freedom. And you seem to be getting there!