We've all been to a sporting event where we aren't sure which beer is the best bet financially.  

Well this story will possibly shock you, maybe even enrage you.

Hockey fans in Idaho have paid $4 for a "small" beer, served in a squatty plastic cup, and $7 for a "large" beer, served in a taller cup.

But according to a lawsuit filed this week against CenturyLink Arena in Boise, the cups hold the same amount of beer. The arena is accused of knowingly misleading and defrauding customers and intentionally adopting “unconscionable methods” that amounted to deceptive business practices. The lawsuit filed in Idaho state court seeks class-action status to represent the thousands who have bought the $7 beer. They seek punitive damages, as well as more than $10,000 in actual damages.

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