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GamersGate US has the Dead Space series on sale as the daily deal for the weeklong EA Sale.
Dead Space Complete Pack = $9.99 (75% off) – includes below:
Dead Space = $5.99 (70% off) – Activates on Origin
Dead Space 2 = $5.99 (70% off) – Activates on Origin
GamersGate UK has the Mass Effect series on sale for the EA Sale.
Mass Effect = £4.98 – Might be able to activate on Origin if you contact support.
Mass Effect 2 = £9.98 – Activates on Origin