With orders of $25 or more, Amazon offers Prime members the D'Addario EXP120 Coated Electric Guitar Strings in Super Light for $1.47 with free shipping. (Non-members can spend $49 to qualify for free shipping.) That's the lowest total price we could find by $7. It includes plain steel strings in gauges .009, .011, and .016, and nickel wound strings in gauges .024, .032, .042.
Note that this item is a part of Amazon's "add-on program" and can only be purchased with orders of $25 or more.