You have a valid point here. However, I would add/change that price factor actually shouldn't be that big of a variable factor when it comes to research. After all, what may seem justified by you to drop $200 on something might be relevant to how someone might view dropping $20 on something. Priorities are sometimes confused with objectivity of the person's desire to own or have something, but realistically they're strongly bound and confounded by finance and financial status.
For example, I struggle with just dropping $100 on a pair of headphones, and this is strongly correlated to my financial stance. My friend on the other hand, easily dropped $250 on a pair of headphones he liked. And this is just it, as much as I would love to own a $250 headphone, and regardless of how much better they can be over the $100 ones, I still won't allow myself to buy them.
And likewise, that friend won't drop let's say $500 on a pair while another person who has more 'elastic' pocket size maybe fine with it.
That said, I think anyone who cares about their cash-flow should do research (heavy or mild) on pretty much anything that they're going to spend it on.