With the 1 wind 1 earth setup, it takes me 9 inputs before glitching. To be clear, after I click to trade the Silver Flask for the 2nd slot medicine, I have to press up 9 times (so, 1st input of the 2nd empty page if I remember correctly). This links to $13AB, which is the 2nd card inventory slot I think. It is also important to note that different card setups glitch on different pages (some on the first page, some on the 3rd or 4th I think). The visual effect of the glitch is also different. It is a bit confusing!

For the selling part, I guess I would need to test it more, but I have managed to sell lines on the 1st empty page for 20k a few times. I never completed a run with that glitch on console yet, but I suspect we would need to be very careful with it, like avoiding to open the card inventory because it could make the game freeze.

I also agree, although it might end up changing if we manage to find a setup that makes the glitch work on console. I have tried many combinations of cards on emulator, and I can only manage the GSG with 1 earth card setups, so it is also fragile. Maybe a consistent setup also exist on console... The future might tell us!

So, I have been investigating this new shop glitch on an emulator, and I have accomplished a few fun things. However, when I try with the actual cartridge on my console, the game glitches just like Iceplug shown. I don't think it means that the glitch is not achievable on console, because I managed to get gold by going back just a few lines in memory to make sure the game doesn't crash. However, the 1 wind 1 earth card clearly doesn't work. Is it possible that the data contained in the 3 save files affect the glitch in any way? My question is for Autumn of course.

Meanwhile, I will try to find a setup that works on console!