When i first tried Acai berry's i tried these, and spent over £15 on them from the GNC website. Im not going to preach that they made me lose any weight or anything but they definitely do make a difference on the way i feel on a day to day basis, and i managed to lose around 1stone in a few weeks by just normal gym-going, acai berries, and days of manual labouring in the sun...
If you plan on buying any, you will already know they are good....if you're unsure, heres a good test buy :)
Instore aswell (Noticed in manchester market street branch today)
This price until 15/10/2009