I was in a big box discount department store and idly wandered by the now locked glass cases to see what binoculars were available. I have 6x, 8x and 10x at the house. The display started at 10 and worked UP from there. No smaller.
I'm thinking the marketing departments are using the old method, and now it's called "glass envy." I still prefer the 0 power red dots which will reach out accurately to 100m.
My favorite is the 6x Leupold Yosemite, in mixed Ozark woodlands you generally can't see over 100 yards anyway. The 10x I picked up at another location as described, I'm not passing up a pair of roof prism Nikons for $40. There is this mark down aisle there, and every now and then it's worthwhile. It may not be a prescribed hunting season out of doors, but inside around sporting goods, it's always hunting season.
I have tried a 3x9 on a .30-06, when you pull it up for a shot and all you can see is fur, no bueno. No more 9x after that.