Alien Artifacts (EU2012)

Item name	Gray Market Value §	Required for research/foundry project	Required for manufacturing	Nr to keep for research/foundry project
Sectoid Corpse	5	Sectoid Autopsy, Xeno-Biology (4x)	Uplink Targeting (Aim) (3x)	5
Sectoid Commander Corpse	10	Sectoid Commander Autopsy	None	1
Thin Man Corpse	5	Thin Man Autopsy, Improved Medkit (4x)	None	5
Chryssalid Corpse	5	Chryssalid Autopsy	Chitin Plating (4x)	1
Outsider Shard	N/A	Outsider Shard	Skeleton Key (1x)	n/a
Floater Corpse	5	Floater Autopsy	Defense Matrix (Dodge) (x3)	1
Heavy Floater Corpse	5	Heavy Floater Autopsy, Advanced Repair (4x), Advanced Flight (2x)	None	7
Muton Corpse	5	Muton Autopsy, Ammo Conservation (6x)	None	7
Berserker Corpse	5	Berserker Autopsy	Combat Stims (1x)	1
Muton Elite Corpse	5	Muton Elite Autopsy	None	1
Drone Wreck	2	Drone Autopsy, Drone Capture (4x), Improved Arc Thrower (4x), Advanced Flight (2x)	None	11
Cyberdisk Wreck	7	Cyberdisk Autopsy, Advanced Flight (2x)	UFO Tracking (Boost)(x2)	3
Sectopod Wreck	10	Sectopod Autopsy, Advanced Construction (2x)	None	3
Ethereal Corpse		Ethereal Autopsy	Mind Shield (1x)	1
Elerium	3	Elerium, Improved Pistol III (20x), S.H.I.V. Plasma (15x), Stealth Satellites (20x)	Skeleton Key (10x), Elerium Generator (30x), Psionic Lab (20x), Plasma Cannon (10x), EMP Cannon (10x), Fusion Lance (10x), Hover S.H.I.V. (20x), Firestorm (5x), Mind Shield (20x), Light Plasma Rifle (?), Plasma Rifle (?), Alloy Cannon (?), Heavy Plasma (?), Plasma Sniper Rifle (?)	always try to keep
Alien Alloys	2	Alien Materials, Carapace Armor (10x), Skeleton Suit (15x), Beam Weapons (5x)	Combat Stims(2x),Carapace Armor (15x), Laser Sniper Rifle (23x), Heavy Laser (23x), Scatter Laser (23x), Laser Rifle (13x), Laser Pistol (8x), Skeleton Key (10x), Laser Cannon (21x), Chitin Plating (10x)	always try to keep
UFO Flight Computer	40	Alien Nav Computer (2x), Stealth Satellites (3x)	Firestorm(2x), Satellite Nexus (2x), Blaster Launcher (2x)	5, always try to keep
UFO nav-computer (damaged)	20	None	None	0
UFO Power Source	75	UFO Power Source	Firestorm(1x), Elerium Generator (2x)	1
UFO Power Source (damaged)	30	None	None	0
Weapon Fragments	1	Weapon Fragment (5x), All Weapon Research. Many Foundry Projects	None	always try to keep
Alien Entertainment	17	None	None	0
Alien Food	10	None	None	0
Alien Food (damaged)	?	None	None	0
Alien Stasis Tank	10	None	None	0
Alien Stasis Tank (damaged)	5	None	None	0
Alien Surgery	10	None	None	0
Alien Surgery (damaged)	5	None	None	0
Fusion Core	125	Fusion Lance, Guided Fusion Launcher	Blaster Launcher (1x)	??

Note: Weapon Fragments, Alloys, and Elerium are used to manufacture most items in the game. This is why their resale value is so low and why obtaining a precise number required for each project is so difficult - due to variances in the number of engineers, workshops, etc. Unless you are seriously strapped for cash, try selling something else instead.

Unlisted devices

• "Elevator Beam" - found mainly on Battleships, these odd floor-bound pod pairs quickly and safely raise and drop the user between their repsective levels. Standing on a pod prevents their use, and can keep an alien on a lower floor, giving you a well-defended position.
• Abduction Pod - seen functioning in the opening cinematic, they release some kind of coagulating snare substance, cocooning humans for capture. Despite the many you'll encounter, they give no alloy resources for XCOM.
• Syringe - sometimes when awakening a Thin Man squad, one can be seen weilding some kind of needle, often embedded in a cocooned human, obviously taking blood/tissue samples.
• Plasma Bomb & Nodes - You'd think you'd get some Elerium from a plasma device that can wipe out a small town.