Yes
25-600 usd
Yes
The FS is the most advanced model of the Beretta 92. I wouldn't recommend the early M9 pistols (which were basically Beretta 92F pistols) over the 92FS, but the later production M9 pistols are 92FS pistols. The main difference being the the actual M9 pistol production is supervised directly by the DoD.
50-500 USD or so
100-400 or so
For power its the Five seven, it uses a 5.7x28mm, which is the same round as a P90. It is designed for serious penetration.
Midway has them
100-500 or so
100-1000 USD depending on specificxs
Impossible to answer without more information.
around $1,500.