Lalobear- No not yet. My boys are both in 4 lows now so we ordered enough paramin to last a long time. Since they have both modified their programs it will take some time before we use things up.
Personally I have looked at both TEI and Endo-met supps and they both look like they are kind of the same in terms of additives, binders and fillers. This doesn't really concern me too much as I have made great progress using the Endo-met supps and so have the boys(on their modified programs). We will switch over to the TEI when the time comes. Some other things we buy from Swansons and will continue to do so.