I guess I'm still unclear as to how selling for top dollar compromises the community aspect. But I wasn't around for the golden years of chipping either. Was it some type of utopia where no one focused on price or value and just traded freely? If so, I can see where some OGs would lament the erosion of that.
For me coming into this relatively recently, it surprises me to hear that the way things are now aren't how they've always been. When interest in a particular commodity increases (without an increase in supply), so does it's monetary value. MTG and vintage video game collectors are great examples. What started off as a hobby for some evolved to become a profitable endeavor for others.
So if you want to maintain that level of purity, why not get rid of selling in the classifieds? What if you could only post what you wanted and not what you had for sale? All transactions would have to be negotiated privately. So if you had something for sale, you're only route would be to search the wanted ads for a potential buyer. Or list them on
eBay.