USA : Purchase Panera $100 in eGift Cards, get $20 for you.

Promotion period is three days only – December 17, 2015-December 19, 2015. For every $100 in Panera Bread egift cards purchased online through panerabread.cashstar.com, receive a $20 Panera Bread egift card for yourself. The $100 threshold must be met by purchasing egift cards in a single transaction. Plastic gift cards are excluded from this promotion. eGift cards cannot be used to purchase plastic gift cards online or in cafe. The cumulative value of all $20 egift cards earned from $100 egift card purchases will be emailed to the email address provided by customer during the online transaction. In-cafe purchases excluded from this promotion.
See https://panerabread.cashstar.com/about/terms_and_conditions/ for complete egift cards terms and conditions.

USA : Panera Bread - history

Panera considers its legacy to have begun in 1981 with the original Au Bon Pain Co., co-founded by current Panera CEO Ron Shaich. In 1993, Au Bon Pain Co. purchased the St. Louis Bread Company, which was founded by Ken Rosenthal in 1987. At the same time, the St. Louis Bread Company was renovating its 20 bakery-cafés in the St. Louis area. In May 1999, to expand Panera Bread into a national restaurant, Au Bon Pain Co. sold its other chains, including Au Bon Pain, which is now owned by Compass Group North America.