After flipkart took over they transformed ebay into a second hand/refurbished store and then they changed it to 2GUD. Once the Walmart deal happened ebay bought back the rights of ebay.in, ebay could have relaunched it but they never did.
S21 has major downgrades this time 1080p screen, no expendable storage and no glass back. Not worth the 70k launch price but it will mostly be discounted to 50k like the S20+ six months down the line.