How much did the tokamak cost?

Could you please clarify the context behind the question "How much did the tokamak cost?"? Tokamaks are devices used in nuclear fusion research, and their costs can vary greatly depending on the scale and complexity of the machine. Are you referring to a specific tokamak, such as the ITER project, or are you asking about tokamaks in general? Without more context, it's difficult to provide an accurate answer to your question. Could you please elaborate on your inquiry?