A peck is a 1/4 bushel, or roughly 2 gallons of food which can feed 1-2 people per week.
Box size: 11"x9"x6".
$30 per week when paid quarterly. $390 every 3 months.

A kenning is 1/2 bushel or 4 gallons of food and will feed 3-4 people a week.
Box size: 14"x11"x7".
$60 per week if paid quarterly. $780 every 3 months.

A bushel is roughly 9 gallons and will feed 7-8 people a week.
Box size: 17.5"x12"x11.5".
$120 per week if paid quarterly. $1560 every 3 months.

3/4 bushel is roughly 7 gallons and will feed 5-6 people a week.
Box size: 16" x 9" x 11.5".
$90 per week if paid quarterly. $1170 every 3 months.