$6.99 for 32GB MicroSD flat $5 shipping so great deal if buying a lot. I'm getting 10 to throw into a bunch of Wyze cameras i'm planning to get.
Reads about 80MBps+ Writes are a slower 15MBps-20MBps from a lot of more recent reports. These are probably newer TLC cards, so not as good for heat/dashcam, nor can it probably sustain 4K. 1080p is fine. If it can do 30, it might be able to do 4k. I will test when it comes in!