A kenning is 1/2 bushel or 4 gallons of food and will feed 3-4 people a week.
Box size: 14"x11"x7".

$75 per week. 

3/4 bushel is roughly 7 gallons and will feed 5-6 people a week.
Box size: 16" x 9" x 11.5".

$110 per week.

A bushel is roughly 9 gallons and will feed 7-8 people a week.
Box size: 17.5"x12"x11.5".

$140 per week. 

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".

$45 per week.