Not real sure. I imagine they get a pretty good price buying in bulk and then repackaging themselves; it provides them with a label that can only be found through them, so recommendations, referrals, recipe postings, all lead back to them. It doesn't bother me as they are very open about it. Every signature flavor page plainly states that it is a TFA product; so they are not trying to pass it off as something else like their own "custom" flavors. They even left the TFA flavor names alone so it is easy to find anywhere. I much prefer it to other sites that only sell their "house" flavor line that is nothing more than some other flavor manufacturer's product AND DON'T disclose the source.