collecting an entire collection doesnt make one a collectard, its the thought process behind it. A collectard collects just to collect and for bragging rights. The investment concept surely follows this mentality.
A true TG16 or any retrogamer is one who grew up with the system and plays what they buy. The concept of building the entire collection is done with the mentality that he/she wants to play all the games they couldn't buy back then.
The money one pays doesn't mean much in my book only because whats expensive today may be cheap tomorrow depending on the economic average income. Just 15 years ago 30.00 filled up your gas tank, today it gets you a 1/4 tank of gas. Sure none of us wants to see the inflation of prices but what someone is willing to pay doesn't make them a collectard. This is excluding the concept of using prices to inflate value ect.