Andy wanted all aspects of the beer — including pricing — to be accessible, but it's also a premium product that costs a lot to produce, and "the margins in beer are not very high." They can't compete with the bigger brewers on price, so as they've scaled they've sometimes held or even reduced prices to pass economies of scale on to consumers.
See Andy Miller's full take
They always wanted the beer itself, the taste, and all aspects of the beer to be accessible, and they've tried to keep pricing accessible too. But it's also a premium product, so it costs a lot to produce, and as Andy puts it, "the margins in beer are not very high," so there's not a lot of room to move.
It's also a scale game. They can't compete with the bigger brewers on price and have never really tried to. As they've scaled, they've taken opportunities to either hold the price or even sometimes reduce the price, to pass those economies of scale on to consumers and make sure it's an accessible product for as many people as possible.