Yet again, we had this discussion on HGH and the same goes for T. Unfortunately supplements are very weak and no way near as good as the replacement therapy.
@deleder2k Do you have any severe low T symptoms like impotence? If not don't consider throwing more money out, but if you do, you can try TRT, which does have side effects, like shrunken testicles due to endogenous supression and infertility (not good if you want to have kids)