For reference in determining pricing structures for fresh produce, we often refer to the following sources:
Keels Super - not organic
https://www.keellssuper.com/ProductListView/V
Saaraketha - organic, but very expensive
http://saaraketha.com/nutri-facts.php?type=2
Mihimandala - price list attached, this is from last year May. they change their prices every week according to the market.
Cedric/Svia - price list attached from last year. I asked them to send current price list for this year. Will upload here when I get that.
Past and present price lists for Belipola are here.
Other producer prices lists can be found here.