Price Adjustment Policy

Valid starting January 3rd, 2017. Sigma will provide a one-time price adjustment for purchases made on within 14 days of the original order date, if the identical item is discounted on at the time of the customer’s request. The balance will be issued in the form of a website credit to a customer account. The website credit is non-transferrable and has no expiration date. Price adjustments exclude blowout sales and holiday promotions, including but not limited to- Summer Blowout Sales, Black Friday week, Cyber week, and Green Monday. Price adjustments not valid for free gift and free shipping promotions. Discounts and/or promotions cannot be stacked. Glitches will not be honored. To request a price adjustment, please e-mail


Price Adjustment Policy excludes Wholesale. Price Adjustments not valid for external sites, including but not limited to and

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