Search for tDCS devices ?
At first I did a google search, here what I found. There is an online market place called CAPUTRON.com, who are selling various tDCS devices including an FDA approved model. That FDA approved device was priced at $399 and that price too steep for me. However I found a nice alternative to that it was from a company called Apex. You can visit his website in apexdevice.net. Why did I choose ApexDevice.net ? The biggest reason is the voltage. There are many other options in the market. For example, there is a very famous device called Omni Stimulator. And they sell it to a very reasonable price ($77 if you buy from Ebay). Moreover there is $20 cashback if you make video of yourself using the device. The device is basically $37. But the only hiccup is that its voltage is only 9v. However the Apex Type A device use two 9v batteries, making a 18v voltage. I heard from many in the Reddit that 18v is better cuz it can take care of the skin resistance. So I bought that Apex Type A 18V fr...