Today’s B&H DealZone (one-day deal) features the SanDisk 128GB Extreme PRO UHS-II microSDXC with USB 3.0 Adapter for $49.95, a 50% savings.
This is a fantastic deal for a UHS-II microSDXC card with max read speed of 275 MB/s and max write speed of 100 MB/s. Note the EOS R does take UHS-II cards (but you’ll need an adapter). This deal is today only or until sold out.
100 write speed is really not fast enough for cameras like the new Fuji x-t3. But for some this will suffice.