Ya' know... those don't appear to be the same Poldiac clone. Quality on the FT mech in their photos is (about $24 worth judging from the close-ups) only tolerable, but I suspect actually an example of what you get.
The ones from Vapetech appear to have a different button, and appear (ha ha ha... might be real'ish Poldiacs in the photos) to be available with "shirt and pants" options, while the FT ones do not.
I have yet to see anyone review a Vapetech product, so not a clue as to quality. Hopefully (or not depending on your views of clones), the quality (of the VT) is better than the piece shown in the FT photos.