Negotiate! Use your leverage or make it up. Don't settle for the price given.
It's cheaper if you just join 1 club. They are on commission so they will try really, really hard to up-sell you multi-club or pre-paid memberships, telling you it's a bargain and acting like your best friend. Typical 'car salesman' stuff - don't fall for it. The prices for current month-month memberships vary but will be posted on their website. Typically like 100- down and 29.99/month but sometimes less.
Depends on the family plan, but what I know prices starting from $35
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