Average weights:

Small Container - 250g (serves approx 1 as meal or 2 -3 as side)
Medium Container - 600g (serves approx 4-5 as a side)
Large Container - 800g (serves approx 5-7 as a side)
Extra Large - 2.5kg  (serves approx 5-7 as a side)

$31.95/kg