How much does a qubit cost?

Could you please elaborate on the intricacies surrounding the cost of a qubit? I understand that the cost varies depending on various factors, such as the technology used, the scale of the quantum computing system, and the intended application. Is there a general ballpark figure that can be provided, or is it more of a case-by-case basis? Additionally, how does the cost of a qubit compare to that of a traditional bit in conventional computing? Any insights you can offer in this regard would be greatly appreciated.