Sam’s Club is giving out a $20 egift card to those who renew the membership now. The offer is actually advertised as just a $10 egift card, but DoC reports that it shows $20 when renewing through app.
Just go to Account in the app, click Renew and check your cart. You should see a $20 eGift Card in there along with your membership.
A good deal if you plan to renew, even if you still have a while to go in your current one year membership.