There is a reasonable minimal threshold, but if your spending more than 500-1,000$ on camping gear a year your probably just buying gear for the same sorts of reasons people buy 100,000$ cars.
When I was younger, our school used to host a rock concert about twice a year where student bands would play. Since I was far from being the most popular kid in school I figured that getting up and rocking out on that stage would earn me some cred.
Of course to do that you needed to be in a band, and since I couldn't sing at all being in a band meant you needed to be able to play some instrument. So I went to the local pawn shop , bought the cheapest electric guitar I could find and borrowed a spare amp from a family member. Of course what I really spent the money for was to be able to feel like a rockstar for 20 minutes.
Now if I think about all the people I still know from those days playing in the school hall; apart from one or two who managed to get a career in music, most work in IT , accounting or became plumbers etc. They all now have nice collections of expensive guitars (Les Pauls , Ltd Ed. Stratocastors etc) that they love to show off but rarely play anywhere besides their own homes. Really the amount of pleasure that they get from them is probably nothing compared to the joy we had while rocking out at school playing 4 chord greenday & nirvana covers on our £50 pawn shop axes.
Like I said, the field is overly obsessed with lowest common denominator purchase decisions, that IMHO, are totally at odds with the phenomena they are trying to investigate.
Spending the extra $10k for a better car leads to less happiness than using that same money for a 2-week vacation in Europe / Asia.
They do mention that some things (they give the example of a car) fall in the middle of the possession-experience spectrum, but I'd argue that almost everything does.
I don't buy experiences, and I don't buy possessions. I buy camping gear, musical instruments and other experiential possessions. But, this concept is lost on consumer researchers, who skew young, female and IMHE, assume the whole world is choosing between a pair of shoes or nice restaurant meal.
(FWIW, I just got my masters in research psychology.)
[Edited for spelling]