Get it while it last. Via Google Express add from Walmart @ $48.66 to cart, then apply $10 referral credit.
How do you get the $10 referral credit?
Just refer from one of your Google Express account to another Gmail account. You will get a $10 coupon on the new account. Then you can order from the New account
(mod edit: reminder that referrals are not allowed here on SD, so please do not ask for or offer one)