Unless CDNN gets a chance to buy out someone's "Obsolete Stock" they probably won't get anymore of the .41 AE 20 round magazines.
I do have six brand new ones of these left in my stock. I sell them for $55 plus shipping.
For those of you not familiar with these magazines, they are the exact shape, size, configuration, (Holes in side are punched identical to), the .45 acp magazines with two little exceptions. They are marked as "41 AE" or just "AE," and the sight holes for seeing how many rounds are in the magazines are marked, 5, 10, 15, and 20. The .45 acp magazines are marked "45 acp" or "45" and the sight holes are marked 4, 8, 12, and 16. You can use either magazines in either .41 AE or .45 acp. They work fine for either caliber. Sometimes you have to bend the lips slightly to adjust for the difference in the caliber.