What are good prices for turnips?

[Ably.Saucey]

Hi there,
I don't bother with the stalk market, but sometime I check out the prices.
What are good prices just for future note?

 

[Cascade]

The good prices are 500 -600 per turnip. Price usually go at Thursday

 

[whale-telephone]

http://www.thonky.com/animal-crossing-new-leaf/stalk-market