To be honest, I haven't used any clubs. I thought about it until my cousin brought over his zamplebox package. I can't remember if he is the lowest or mid level kit but only one of the juices was okay, at best.
After pricing it out, it seems way cheaper to buy your own. He dropped zamplebox after 3 months. We now kinda do our own. We each pick a different vendor and order 20 to 40 dollars worth of juices that sound good and swap out.
Most of the stuff isn't really great but some he likes some I like but we get more liquid than with a club. Plus, by choosing one vendor shipping is one time or free.
If you're not sure where to buy or don't feel like searching for places then I guess the club route is a good way to start finding new flavors. I suggest you not get your hopes up about getting a high top shelf liquid though, chances are slim to none on that.