OK, so we have now, auction was posted ~13:00 UTC @ Fri, 18, now ~07:20 UTC @ Sat, 19 = 18 hours later.
No one overbids chum with #1 & #4 -- both positions goes to him for 10K+7K = 17K.
#19 @ 8K Boozar, overbid was ~11 hours ago == he won as well.
#20 I guess it was bid as well at 6K, 16 hours timer started and will ends ~13:46 UTC, Sat, 19.
Other positions went more or less unnoticed.
Also I've realized that I'm overthinking too much, it was way easier to put as start+FT=2*start prices with 16 hours timer after all... which I did with US items.
... May be (just may be) as #19 looks like in high demand I'll consider getting couple more similar ones a bit later. I understand that people don't like elemental damage on weapons even if ed% is higher, that's why #20 was mostly ignored.