Update: A representative from Electronic Arts clarified with us that the resource-earning mechanic in our story is not some sort of glitch or exploit, and therefore they have no plans to issue a patch to fix "the problem." From the EA representative:
"The resource-earning mechanic in Dead Space 3 is not a glitch. We have no plans to issue a patch to change this aspect of the game. We encourage players to explore the game and discover the areas where resources respawn for free. We’ve deliberately designed Dead Space 3 to allow players to harvest resources by playing through the game. For those that wish to accumulate upgrades instantly, we have enabled an optional system for them to buy the resources at a minimal cost ($1-$3)."
Original Story: Dead Space 3 is one of the first AAA console titles to introduce micro transactions, but this GameFront video shows how some users have found an exploit that allows them to get what EA is selling for free. The exploit in question involves an item spawning glitch. The goal of the in-game transactions is to make it easier for players to get the resources they need to create important consumables like ammunition and medical packs.
You can check out the video to your left. While EA has no official comment on the exploit, it is likely that it will be addressed with a title update soon.