Pay attention when wine clubs are offered by well-known companies like Delta, American Airlines, Best Buy, Williams- Sonoma, Good Sam, or the NRA. While joining these wine clubs may get you points, rewards, or a donation made to a cause you support, remember these companies are not involved in the wine industry. They are not selecting or providing the wines, nor are they handling the shipping, or dealing with any problems that occur.
If there is a third party vendor involved, it’s time to Google https://www.google.com that seller's name. This is how you'll discover what their internet reputation is. And you need to know because this is the company you will be sending your personal information and club forms to, where you're making your wine selection requests, indicating your club preferences, billing options, providing shipping information, and paying for the wines. And ultimately, this is the company you must deal with if there are any problems.
If you discover information that concerns you, take the next step and check the third party wine club seller's reputation with the Better Business Bureau http://www.bbb.org/us. Also check to see if there any complaints registered with their home county BBB. If so, proceed with caution. Few people will take the time to submit a BBB complaint unless they are very unhappy. If you start reading pages of complaints, walk away.