Some Sams club members are finding the following coupons in thier Instant Savings Section

99.99% off Member's Mark Purified Bottled Water (16.9 oz, 40pk.)
There is also a 45 pack option

and
"99.99% off Rotisserie Chicken."

Valid today
It is unknown at this time if this is simply a mistake or if it is valid
Some have had sucess using the coupon with a pick up order.