Is the crypto mining craze affecting graphics card prizes stabilized now?

Yes and no. The GTX 1070 Ti was never targeted by the miners for whatever reason. I'm assuming they already had their 1080s. Also, DRAM memory production increased in capacity several months ago and AIB video card vendors (EVGA, ASUS, MSI, etc.) got the memory chips in at a faster rate for supply. Also, retailers are dropping prices to move the cards in preparation for the next generation of Nvidia GPUs, Volta, starting with the GTX 1180. Next month we should see the release of the Founder's Edition of it and reviews of it followed by vendor cards soon after.