Hi--its the same thing. the New Lifestyle Diet is the site by the original people who made up the wonderslim products. You can buy packages through them plus some individual items.
For quite a while now I have been buying the shakes etc at a place called Diet Direct--google them [not supposed to post links here but if you message me Ican help you]. they sell wonderslim products even cheaper. plus they have SALES. and they seem to have everything available as small and bulk packs.
I usually wait until my favorite [aspartame free mocha shakes] go on sale, and buy a bunch.
hope this helps!