» Which calculation remains on a no-wagering trial bonus?
The one-bet calculation. In 30 seconds: bonus wagering is zero, but the balance is played once, usually at minimum odds of 1.50–2.00, and winnings are cut at the cap. For a small budget this is the most predictable offer because the maths is a single line.
Scenario: a reader took a 100 unit no-wagering balance; minimum odds 1.80, cap 200. One bet: 100 × 1.80 = 180. It won, 180 is under the cap, all of it reached his e-wallet in two sample hours. Had it lost, the cost would have been one bet. Comparison: the same 100 with 10× wagering needs 1,000 of turnover, five days of work. Figures are examples.