API run-rate in this calculator is daily updates × 30 × per-1M rate + fixed. With 12000 updates/day, 15 USD/1M, 1.2 payload ×, 8 retry %, 90 fixed USD the result is $97.00 | 388,800 calls.
calls = updates × 30 × (1 + retry%) × payload. tot = calls × rate/1e6 + fixed. The formula uses updates and retry.
$97.00 | 388,800 calls is not a marketplace API price list. Another set of numbers gives $41.89 | 157,500 calls, and a further set gives $182.68 | 840,000 calls. Empty scenario fields do not change the result.
OAuth refresh answers a different question. Egress cost does too. Here 12000 updates/day, 15 USD/1M, 1.2 payload ×, 8 retry %, 90 fixed USD leave $97.00 | 388,800 calls.
Type 12000 updates/day, 15 USD/1M, 1.2 payload ×, 8 retry %, 90 fixed USD and click Calculate. Two more ready sets sit under the form: $41.89 | 157,500 calls and $182.68 | 840,000 calls.
Other numbers on the same labels move the result. The first example gives $97.00 | 388,800 calls.