Where can I get good logos?

As a cryptocurrency enthusiast and a finance professional, I'm often in need of visually appealing logos for various projects and initiatives. Could you perhaps guide me to some reliable sources where I can acquire high-quality logo designs? I'm specifically interested in designs that capture the essence of cryptocurrency and finance, while maintaining a professional and modern aesthetic. Are there any online marketplaces or design communities that you recommend for finding such logos? Additionally, I'm also curious about the pricing range I should expect for these logos, given their specialized nature. Your insights would be greatly appreciated.