Conversely, TD Ameritrade's Thinkorswim service levies a fixed fee for each stock & option trade, but makes up for it with an extensive library of research tools andcash rummy app instructional materials. Coinbase levies a spread of approximately 0.50% on cryptocurrency sales and purchases when it comes to trading applications. It's vital to take into account Coinbase's accessibility and convenience when evaluating this fee in relation to traditional stock trading costs, even though it may seem higher.