Discover This Week’s FREE Samples. Freeosk is offering FREE Dot’s Pretzels and Member’s Mark Better Nut Bar at Sam’s Club locations from 01/06/2023 through 01/12/2023. 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.