A Walmart was stunned to find that Great Value offers twice as much milk as other brands. But the farmer says it's justified.

Shopping at Walmart doesn’t mean you’re getting the same deal as everyone else. A recent report found that grocery prices fluctuate wildly by state, with some shoppers paying much more than others.

Walmart shoppers swear by these Great Value products, saying they rival or even beat their name-brand counterparts for taste and quality.

Diving into the explanation, the creator says that the first reason why Walmart’s Great Value milk brand is a lot cheaper ...