I am fairly sure that Strange items can only be aquired from random drops.
Currently somewhere around 4 refined.
No. the stock weapon for the scout is the scattergun. In the demo video for TF2 the scout is armed with a nailgun, which is a legacy weapon from the original Team Fortress. There might be a air powered scattergun in the steam workshop, which are Community made weapons. NB: also in the TF2 demo, the demo man is armed with dynamite. :)
you cant sadly
No, but don't fret, its only a reskin.
I believe there originally was, because it was shown in the demos held by a scout, but I am guessing it has been removed either by an early update or before the game was released. There is a scattergun tho. It is used by the scout, but isn't air powered. It is more of a double-barreled shotgun with the end sawed off.
2 to 3 keys
Wait for it to drop OR craft it with 1 reclaimed and Force a Nature
you go back in time
In the trading community, a Strange Holiday Punch is worth about 2 to 3 keys.
The same way you craft in any version of the game. But you need the PC version. There are no other weapons in the xbox version.
1 Refined Metal, give or take
Yes, have a look at the TF2 Wiki for exact information.