I just ordered 2 new cases. The pair cost just under $10.
That looks just like the one I purchased and they come without the circuit board transmitter and the chip.
You have to install the board, chip and old key from your old fob to make it any use. The cost to cut the key to match the one from your old fob is much more than the blank fob is worth, in fact it is probably not worth the stamps to mail it at the cost of postage these days.