PasghettiI wasn't so sure as well as I forgot how much my bank statement said for the TEC A3 I ordered, so here is their response:
Well, this was a big shock on our part. We discovered that this entire drop was charged incorrectly to everyone that was on it. Worst thing is, everyone was undercharged, so we lost a lot of money on this. Your transaction history shows up with the $31.49 + $6.78 (!!! the price for shipping is for my country so may be slightly different for whoever is reading this !!!) for shipping, but you were charged only $17.57 (you can check your statement). In any case, I don't think we will be doing anything about this now as it has been too long after the drop ended.
Oh well. Our loss, your win. (also, the prices on TEC's website seem to have come down since then--just FYI).