I’m getting ready for a trip to Israel and Jordan so it is time to buy a memory card. My Canon digital camera takes either CF cards or SD cards. It seems to write and read much faster with the CF cards so that would be the natural choice except that 128 GB CF cards at Amazon are $300-700 (name brands; I don’t want to trust my images to “Komputer Bay”) while 128 GB SD cards at Amazon are $96-$136. What’s different about the innards? I don’t think it is the package that makes a CF card expensive because an 8 GB CF card sells for as little as $15.
[Separately we get to the question of why a 256 GB SSD costs $191 at Amazon but Dell charges $300 to upgrade a to-be-built laptop from a 128 GB drive to a 256 GB SSD. The mechanical hard disk market seems almost perfectly rational by contrast.]