Don:
Correct, including the price. 9 pounds seems a lot unless one considers these 10 M air rifles are very well balanced. Muzzle loaders for the most part are super barrel heavy.
The question involves coming up or down into the black. Initially, maybe but for the final entry and shot, unlikely with a blade front sight because the only way a shooter can see where the top of the blade is in relation to what ever sight picture he likes using is by coming up from 6 or in from the sides. Coming down from 12 and you can not see where the top of the blade is in relation to the black until the blade has completely crossed the black and is heading out the bottom. Then the shooter stops the movement and comes back up.
Aperture sights allow a shooter to see the black very easily from any direction so as the sights are moving towards the black, even if from 12 down, their eyes can see direction and speed and their bodies and finger can adjust accordingly. I doubt their final entry and shot is taken top down, though. Most likely bottom up or from a side. Reason is simple. If you 'jerk' the trigger the barrel goes down. Combine that with moving the barrel down to begin with and you go out the bottom. Get too aggressive on the trigger going up and most likely you stop the rifle instead of pulling it down so at least you can get a score although it won't be center.
A competitive match .22 or air rifle is relatively easy to hold but it too can't be held perfectly steady so if a person watches something like the Olympics when the camera is showing the muzzle and shooter from the front, you will notice the barrel is always moving. Also that the movement sets a pattern. The shooter sees this pattern of movement and is comfortable with it so they can generally break the shot successfully. Yes, they are shooting while the barrel is moving. Just that it isn't moving a whole lot and they recognize what is right and can shoot at the right time. They are very comfortable with this which is why they are in the Olympics.
No matter which way a person goes for a entry and shot into the target, it is always better to break the shot while the barrel is going towards the black than away from the black. Much higher chance of scoring. If you go up and do this, you can see the blade and entire black so you have a much better chance of score. Since going down means you won't see where the top of the blade is in relation to the center of the black until you have crossed the center of the black, you will most likely go out the bottom.
I do not envy 10 M air rifle shooting. I believe they have a certain amount of sighters then shoot 60 consecutive shots for record standing in an hour or so. Super hard on the back which is why they use those stands to rest the rifle between shots.
Shoot an 8 and you go from 1 to 10. Very demanding sport.
Scipio