Do you KNOW what variety strawberries these are? Also, how do they taste?
Runnerless alpine strawberries are often recommended for container culture, and their berries are tiny about fingernail size or first joint of finger at most.
I have Virginia Wild Strawberries and these also have tiny berries -- first pickings being the size of tip joint of *my* thumb, and then getting smaller thereafter. We've always enjoyed them, but I thought my kids would like the larger commercial berries as well, so I planted 75 plants last spring, including Stark's Giant Red (others are Sweet Charlie and Tristar). Well, my kids still prefer the intense flavor of the wild strawberries. The other ones are difficult to pick at peak flavor (even then, they're inferior to the fragrance and intensity of the wild ones) -- too early and they taste like water, too late and they taste like vinegar.
We're all turning into strawberry snobs.