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Start with the saved defaults: twenty-five hundred tokens per attempt, eight tasks per agent, three agents, and one average extra attempt per task. The calculator multiplies by one plus retries. Five thousand tokens per task times eight tasks gives forty thousand per agent. Three agents therefore consume one hundred twenty thousand tokens. At the configured rate of point zero zero zero six dollars per thousand tokens, the unrounded cost is seven point two cents. The interface rounds that to seven cents, rounds the per-agent two point four cents to two cents, and shows seven dollars twenty for one hundred runs. With zero extra attempts, token usage halves to sixty thousand. Both bars share four pixels per thousand tokens. These are configured assumptions, not observed usage or current provider pricing. The agents field multiplies the entire eight-task workload. Raising agents from three to six doubles total tokens from one hundred twenty thousand to two hundred forty thousand. Exact cost doubles from seven point two cents to fourteen point four cents, while displayed rounded values are seven and fourteen cents. Both bars share two pixels per thousand tokens. This calculator does not divide a shared task list among agents, model scheduling, or predict speed. Its SVG horizontal axis is cumulative task index, not elapsed time. The retry field accepts fractional average extra attempts, so the factor is one plus that average, not a measured failure probability. Fractional task counts are accepted too, but the plotted loop emits whole task-index points while the total uses the supplied fractional count. Keep totals and plot interpretation separate. The eight checklist boxes are manual confirmations about credentials, polling, parsing, retries, timeouts, marketplace steps, rewards and token logging. Three checked boxes displays three of eight; checking all eight changes the text to All clear. Both bars use sixty pixels per checked box. No external credential, marketplace, reward or running agent is tested by that label. Reset restores calculator defaults and recalculates, but does not clear these checkboxes. Editing a calculator field recomputes immediately. Invalid inputs clear the result table and chart and show field errors. The saved share action carries calculator fields in URL parameters, not checklist confirmations, and restoring those parameters selects custom pricing. This local explanation makes no API, marketplace, model backend or public-site request.