Daily Item and Smugglers

The daily item doubles profit. Does that mean if the daily item is sold to a smuggler, profit is quadrupled?

I'm not merchant destiny, so I haven't tried.

The Daily Item is only for the Smuggler. Your profit is doubled when you sell the Daily Item, which changes every in-game day, to the Smuggler. It isn't doubled anywhere else.

So any other items sold to the smuggler won't be doubled? Or is the only point of a "today's item" to trade with smugglers?

I sold jellyfish from cobh to the smuggler in silab, I'm sure that was the right daily item and it was for ^81 in profit... But when I got there it was valued at 2, or -98 in value, i didn't lose any ducat nor gained any from trading my 110 jellyfish... I did level up from the exp... Daily goods is real time? Explains the huge loss in cobh exp (20k).

It was already known that the daily good does not prevent EXP loss only once per real day.

Then how come I don't gain any ducat and yet still lost exp? Is it a bug with trading a daily good that's mixed and isn't treated like a daily item?

If (Daily good = true) and if (Daily limit = true) {withhold so No ducat gained but other stuff occurs like exp gain and commerce exp loss?}

It seems to me that to prevent exploits they removed ducat gained if you trade the 2nd daily good and onward... The npc commented that after you trade them the daily good, they'll give you a 2x buff to any sales right after? Anyone covered that yet?