That's half of it You need an amp to go with the headband. The original Peanut/Upgraded Focus Trainer amp is about another $500. Since Pocket Neurobics released the Q-WIZ (about $1000), it might be a better move to spend the extra money for the option to do EEG training later. HEG is great, but it's no replacement for EEG.
do you guys think this is the same device? https://brain-trainer.com/product/nir-heg-headset/