The Riviera resale contracts have been selling for higher than what many people had originally predicted here. I recall someone once saying they would be below the lowest resale prices but they’ve mostly been more than that. From my what I can recall, they have been selling for more on the resale market than OKW, SSR, and AKV. I don’t think Disney has been buying Riviera via ROFR either, so the prices are what resale buyers are paying.
When we bought direct (right before Riviera opened), Riviera was a no brainer. Incentives made it cheaper per point than everything except OKW and SSR.