Quicksilver $20.16 off anything online, min spend $50

Just got an email from quicksilver with the following deal

Spend $50+ and get $20.16 off

IMPORTANT INFORMATION
You must sign in or create an account to redeem this offer. Minimum Spend $50. Promo code HAPPY2016 must be entered at cart or checkout to redeem. Promo code expires 31 January, 2016 and is valid for one use only. Offer excludes gift cards and cannot be redeemed for cash or used in conjunction with any other offer.