Professor Abrasive has just opened public orders on Satiator optical drive emulators. The price is $260 and there are a few in stock now, with a much larger stock coming soon that should make them readily available.
The Satiator is an awesome device, but it might not be for everyone. The total price including shipping with a 128GB SD card is around $300, while a MODE with an SSD big enough to fit the entire library would cost the same. Also, a Fenrir with a 64 or 128GB MicroSD is about half the price and a model compatible with 21-pin Saturn’s is coming soon.
In my opinion, the Satiator is for the gamer who either wants to retain the ability to play discs, or who wants a solution to use on multiple Saturn’s. Or both! Check out the review videos below for more info: