A) EEG Cap with dry electrodes which can be used alternatively to OpenBCI Ultracortex Mark costs $ 232: https://www.aliexpress.com/item/4000389347282.html B) OpenBCI Galea OpenBCI advertises “High-quality, low-cost, modular EEG hardware with a global open source community. SDKs & Drivers. Global Shipping. 100% Open Source. Founded 2014. Affordable EEG, ECG, EMG”. The Galea costs $ 22,500.00 Is …