Unfortunately, this is a bigger scam to their regular customers than new customers. Loyal customers take for granted that the products they see in the same (or what APPEARS to be the same) container should be the same. New customers are more likely to examine the product to see what it offers.

In that vein, a fairer solution would have been to change TWO variables...not just the volume, but also the price. For example, rather than keep the price the same and lower the volume without notice how about: "New 3.5 pound container" and set the price of that according to the price increase that is now being applied to the 3 pound version. The benefit of this to existing customer is that they can actually evaluate the product to see if they need a new larger size for a little more. The benefit to the company is that they can then start offering the "New 2 pound container" and later: "New smaller container, still 3.5 pounds--more environmentally friendly" (and cheaper for them to produce!

Not really a win-win, but at least it allows both side to continue to play the game on a fairer basis.