SuperBiiz.com takes 15% off most orders with no minimum required via coupon code “GRAD15″. (A maximum discount of $15 applies.) That ties a May mention as the best general use percent-off coupon we’ve seen from this merchant, which sells computer hardware, peripherals, accessories, and more. All combo deals are excluded; it also doesn’t stack with any other discounts. Coupon ends June 6.
Update: Coupon code corrected.
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