Open za gifts?
No definitive answer but not much in it as the prices are fluctuating either side of the line.
Last night presents were selling for ~9s. A present usually contains some booze which was selling for ~7s plus other bits.
I open them, just in case there is a winning lottery ticket in there.
I´d say you´d better sell them now, and maybe if the price goes down then go for opening. Remember, you can still open lots of personalized gifts.
I open them for the chance at one of the minis that I need. Odds are pretty good that you will get at least one of the drinks in it and I have gotten up to three at once. That’s a return of 21 silver as opposed to only 9 for the gift.