I know this is an older thread, but I have to add my two cents as well.  I've been around Renderosity ever since it first started and have purchased thousands of dollars worth of products here and have stuck with Poser and Renderosity (could go to DAZ and spend my money on their legacy products) .  The rewards program was a wonderful thing for everyone.  Now it's only for Prime Members and honestly I would love to hear from someone that was involved in this decision as to why it was made.

I could be a Prime member however, there are not enough new GOOD QUALITY products coming out for Poser to make it worth the money.  Now you have taken away the incentive for me to continue to dip into my wishlist (thousands of items there) plus support those vendors that are putting out worthwhile products for Poser.
This decision is totally unfair and I'm sure those that made it had in mind that it would incentivize people to join Prime.  I will repeat, there are not enough quality products being made for Poser to get us there. 

As a long time supporter of Poser and of Renderosity, I would implore the PTB to revisit this decision.  It is a slap in the face to those of us that do not see a need or cannot afford to have Prime, but nonetheless still shop here.