@tevor - hope you get that Rupee back, though a Rand would be better.
@rosalind - the code only needs to be applied to 19A. Not much of a payoff though.
The conflicting letters in the grid form 13 pairs. Under the grid, write the letter that corresponds to the one in 19A for that column.
@ixion - stay tuned. Also for Harper's.
@kilgore trout - welcome back.
@aristophanes - they often have good surface read, even when the clue is easy.
My stars: A 12, 18 (not PC), 27, 31. D - 5, 8.
It was a quick one. Let's hope for an Atlantic level puzzle some time, but I doubt it.
They should offer their services to British periodicals.