Huuum, even if they are tanners that is way too fast.

I know I do about 1200 pelts a year (capes and hides) and I keep them about 1 month in salt here to cure.
Of course the humidity in South Florida is around 78 to 98 % must of the time so the pelts take longer to cure.Maybe in your area they dry faster.

Or maybe the guy is not backed up, you should have made a mark on your pelt , like use a 16 p nail and dig holes in the shape of your innitials, that would prevent someone swapping your hide for one that looks like it.