Obviously, it would depend on the exact model. But what I know is that the city of Detroit spent $3,900,000 on 25,000 Leotek LED streetlights, which comes out to $156 per streetlight. But that is on a bulk purchase. Although you could expect most models to cost anywhere from $150-$300 when bought individually.
This is the most similar I could find to the configuration you want.
https://ebay.us/m/hnCzbj