Big Lots: New Coupon 20% Off Entire Purchase – Today Only! July 18, 2010 at 10:45 am by Cindy Livesey | Retail Printable Coupons 0 comments For today only, you can score 20% off your entire order at Big Lots. Just head over here to print your coupon. Remember it’s for today, 7/18, only. The links in the post above may be affiliate links. Read the full disclosure.