Discover This Week’s FREE Samples. Freeosk is offering FREE Member’s Mark Better Nut Bar at Sam’s Club locations from 11/04/2022 through 11/10/2022. If you want to get this freebie, click on the “Get FREE” button, find a location near you and head out to the store. Download the Freeosk app for Android or iPhone so you can redeem the samples at the Freeosk location.