The stations/market API may return an incomplete list of commodities.

[redline16]

I periodically notice that www.edsm.net/api-system-v1/stations/market may return a very limited list of commodities, not including all items.
For example, the attached JSON file obtained from https://www.edsm.net/api-system-v1/stations/market?marketId=3225348096&systemName=Ngurii doesn't list Soontill Relics, although they are listed on the website (I've also attached a copy of the page).
After some time, I updated the API request and received the full list of commodities. However, the market update time hasn't changed, meaning no one has updated the data during this time.

Ngurii _ Cheranovsky City_Market.json

Ngurii _ Cheranovsky City _ Commodities _ Stations _ EDSM - Elite Dangerous Star Map.pdf