@nyanotech really shows the massive difference in material cost when they have to meet the full V90 / U3 specs for sustained transfers. so much more fast flash required.

@gsuberland anyway i bought new cards (the middle one here and one of the lexar 2000x, planning to use both of them as the pair in the camera) because i noticed that the cheaper model sandisk i was using before would have a few bits changed every time i copied the files off