Rich Dreher is now accepting pre-orders for the CFFA1, a ProDOS-accessible compact flash interface for the Apple 1 and the Replica-1/Obtronix series clones. The CFFA1 is $119 USD, plus $5 shipping for 1-3 boards.
This production run is limited to 100 cards, so this batch will probably go fast. We’ve ordered ours (2 in fact), and I will very likely post a mini-review after they have arrived and been completely tested.