Newegg is selling Lowe’s $100 Gift Cards (Digital Delivery) for $90. That’s a 10% discount. This is a two day sale that expires this Wednesday, 10/18/2017. There’s no promo code required, since discount is already shown on the page. There’s a limit of 1 per account.
At Newegg you also get 3% through Visa SavingsEdge if you have a Visa Business Card such as Chase Ink cards. You can also use your Amex Offers if you haven’t done that yet. That will give you a decent discount for personal use, or a very small profit depending on your reselling relationship. The limit is 1 though. You could also try a shopping portal, but I believe they haven’t been tracking recently. If you’re planning to make purchases at Lowe’s, also check if you’re targeted for this new Amex Offer.