The problem is that, unless you cheat, those goodies tend to be prohibitively priced. However, because Fallout 4 is a Bethesda game, the game’s vendors somehow have access to a nearly-endless supply of all the rarest stuff.
And finally, your power armor gives you extremely powerful defenses and augmented stats, but it runs on rare fusion cores which you must scavenge in the world. The game also includes a number of weapons like the Gamma Gun, the Missile Launcher and the Cryolator, which are devastating, but which require ammunition that is extremely scarce. Your vault survivor can scavenge for numerous resources - some common, and some scarce - which you can use to craft upgrades for your settlements and modifications for your weapons and armor. Fallout 4is a Bethesda game, and that means it has an interesting and complicated in-game economy.
