The financial case for a home gym has never been stronger — and Costco has never been better positioned to help members build one. The average gym membership in America costs $40 to $70 per month — $480 to $840 per year — plus the specific friction costs that make gym attendance inconsistent: the commute, the parking, the crowded equipment during peak hours, the membership fee that continues billing regardless of attendance. Research consistently shows that gym memberships ar