Heads up, received a coupon in mail and below are the terms:
Valid online at staples.com or by phone at 1-800-333-3330 only. Not valid in store. Cannot be combined with any other discount or coupon. Excludes Daily Deals and Auto Restock orders. Limit one coupon per customer, nontransferable. Minimum purchase requirement must be met with purchases to which no other coupon or instant savings offer applies.
Tax and shipping not included in calculating the minimum purchase. Not valid on desktop or laptop computers, tablets, netbooks, streaming devices, Amazon products, Apple, Bose, Ink&Toner, Epson EcoTank printers, HP Instant Ink, Home Atumation, JBL, SqareTrade warranties, Steelcase, Ultimate Ears, Wacom®, self-service print, computer workstation, scanning, gift cards, prior purchases or any. No cash/credit back Coupon value applied pre-tax. Expires 12/9/17
Used an Optical recognition app to get the text. Sorry for the typos.
EDIT: It is a single use coupon code. I typed in 30$, not sure how it ended up as 29.62$.