Click /Items
Check that /Ships To: is set to your home country (top of the items screen).
Everything on that list should be available.

When you find something you like click into that product page to check:
The sellers rep ( the /10 score by their name).
The product rep ( the /10 score by the product name).
What the recent reviews are like (and how old they are).

If you're happy and you've checked the myriad bitcoin threads... click Buy.
Then follow the on screen instructions on sending payment of the Bitcoin amount.

reddit has been wiped of this data mate

wikipedia ranscranial direct current stimulation (tDCS) is a form of neurostimulation which uses constant, low current delivered to the brain area of interest via electrodes on the scalp. It was originally developed to help patients with brain injuries such as strokes. Tests on healthy adults demonstrated that tDCS can increase cognitive performance on a variety of tasks, depending on the area of the brain being stimulated