My favorite merchants sell very cheap and are held in high estime and do great volume as far as I can tell: Reika, Kobamax, 9mbi, BatLab, BVH, 3Dream in the old days. On the other hand David's work and Osskarson's for instance are great but I have only been able to buy a little of either because of the prices. I am disabled (yada yada) and my discretionary spending for Poser content is very low. Sub-$10.

Often very good products end up in Clearance at RPM only because of high pricing as far as I can tell but the quality stuff at $5-$7.50 seems to sell very well and stay in stock perennially. All my vendor income now comes from a single $5 product I put in the RMP ten years ago which still sells about a half dozen a month while my costlier stuff has slipped out of Clearance in the last couple years. At one time I generated about $600+ a month with just a few Poser products priced $5-$7.50 here and at another store but that was some time ago.

I say try for volume.