CSA members pay at the beginning of the season, or at
least agree to a share price that will be paid in installments.
By doing this, the members share in any loss, or bounty, for
the season. For example, due to a weather or pest problem
there may be a year without sweet corn. That translates into
a small economic loss to the members, but it would have been
a significant loss if the farmer had assumed all the risk.