GeekBuying offers a dozen tiered sitewide coupon codes depending on how much money you are spending in your order. The more you spend, the more you save! Generally, the coupon codes are equivalent to 4-5% off your order. They are often a flat dollar discount, so it could take some mental math to determine which coupon code saves you the most money. An annual sale in June is a must-shop for random tech gadgets.