https://www.crowdsupply.com/hackerbci/pieeg#products https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3772579 They offer OpenBCI Cyton with 8 channels starting for 200 USD on Aliexpress. But really serious OpenBCI users have to keep silent about it that they use OpenBCI made in China, or else they increase prices and maximize profits out of it. So keep silent if you use products from OpenBCI made in …