Freely; either without price, for fish was very plentiful, and fishing was there free; or with a very small price; for nothing is sometimes put for a little, as 1 Thessalonians 18:20 Acts 27:33; and none for few, as Jeremiah 8:6 1 Corinthians 2:8. And this is the more probable, because the Egyptians might not taste of fish, nor of the leeks and onions, which they worshipped for gods, and therefore the Israelites, who speak these words, might have them there upon cheaper terms.
Related Commentaries of Numbers 11:5
Numbers 11:5
5 We remember the fish, which we did eat in Egypt freely; the cucumbers, and the melons, and the leeks, and the onions, and the garlick: