PINE64 has announced prices for the Quartz64 Model B, its Rockchip RK3566-based Raspberry Pi competitor. The SBC will launch with 4 GB and 8 GB of RAM options, both with M.2 connectors for NVMe SSDs.
https://www.notebookcheck.net/PINE64-Quartz64-Model-B-availability-and-pricing-announced-ahead-of-April-shipments.609354.0.html