NEW, Un-Opened bottles. Stored in climate-controlled conditions, with an outstanding shelf life. 

Isagenix Greens (New Style) - 10.6 oz - Best by November 2025
Isagenix Greens: Organic (Old Style) - 9.5 oz - Best by October 2022 (Passed the best-by date, on clearance!)

Old Style price of $40 is for quantity of 4 bottles, mailed in a flat-rate envelope. 
New style prices is for Quantity 1, mailed ground service.
 
Please note that because the "Old Style" is far beyond the best by date, it is not offered/recommended for non-vetrinary use (i.e. it may not taste the same as the "New Style"). I personally still consume this daily (mixed in with a protein shake). I understand it can also be used as a discount alternative to veterinary supplements like Ruff Greens (My dog loves this stuff when mixed in with scrambled eggs).

Note that the new version is not marked Organic, so there may be other differences between the two mixtures affecting flavor as well.