Random rants - 4013 orange

Recently, there has been this office pantry talk going on....

"The 4013 orange is sweet and very nice to eat! Somemore, its very cheap!"

4013? secret code? some china brand?

After my investigation and some free tasting (with compliments from my colleague).....my findings are as follows;

1) they are refering to 'Sunkist 4013' oranges aka navel oranges
2) the oranges are not all sweet (I ate one which was sour)
3) the oranges are found in 'Shop n Save' and very cheap indeed, last time i checked, it was $1.75 for 5 )
4) how to choose? Choose the ones with "navel' on the bottom, they are likely to be sweet.

If I were to choose my fav colour, it would be orange colour (totally irrelevant...I know...but dun care lah!)