The ‘200GB SanDisk Ultra microSDXC UH-I card, Premium Edition’ will be available sometime in Q2 2015, and will be priced at $399.99. It also comes with a 10 year limited warranty so you don’t have to worry if it suddenly stops working
... you only need to be worried for the data that you backed up on a new, three month old, zillion Terabytes hard disk that failed for no apparent reason the same day the SDXC did.
More seriously, The Hive is right , and it reminds me of my (completely faked, BTW) calculations on durability of USB sticks; only this is much smaller and costs some 25 to 50 times the money:
Knowing myself, I would reduce the "useful life" of the thingy from the average 10 months in the above, to around 6 months .