Nowhere. There are no shops and no money in Undead Nightmare. Everybody is too worried about staying alive to keep an actual economy going. That's why all you ever pick up is ammo. One of the Nigel West Dickens missions will give you the capability to make ammo out of Undead body parts for the Blunderbuss gun (which he either gives you at the same time, or is rewarded for clearing a particular town, I forget). Thenceforth, searching corpses may give you ammo or undead body parts. Flowers can be picked to make undead bait (another Nigel mission) and phosphorous coating to set undead aflame (I forget which mission this is). The only thing I can't figure out is what the hell you'd ever do with animal parts, bc I don't seem to be able to make Blunderbuss ammo with animal parts, just parts I get off human undead.
do your missions
Whatever you want
personally i believe that red dead redemption is better as it has a longer story mode
No it is not, it is only multiplayer online.
as of 16th September 2012, £7.99 in the United Kingdom
you can get a knife in multiplayer i dont think single though.
Yes you can once you have downloaded the extention
It is some we're in the bush around thieves landing
yes you can but you must first download it from the playstation store or the xbox equivalent
Tall trees great plains any where really
its on Undead Nightmare
depends what type of game your in to. personally i like red dead redemtion undead nightmare and fifa 11. but its up to you what game you like