The Sierra Trading Black Friday 2013 ad is here, and this 1-page wonder announces some huge storewide savings. Shop any time during their 3-day event and save an extra 25% off your entire purchase. The first 100 people in line on Friday can take an extra 10% off everything they can fit in a paper bag. The first 50 people through the door will get a gift card valued at up to $500. Stores will be open Friday, Nov. 29 from 6am - 9pm with Saturday and Sunday hours from 8am - 9pm.