Record the base total
Set the coin, lines or ways, then identify the total stake for one normal round. Do not start from a per-line value. This base lets you compare the price of an optional mode with the number of ordinary rounds the same budget would purchase.
Read the feature quote
Open the feature-buy panel and record the exact quoted cost and mode. Confirm whether the purchase begins a feature immediately, changes RTP or volatility information, and remains subject to the same balance type or promotion restrictions.
Check persistent toggles
Ante bet, extra chance and enhanced-feature switches can stay active for later spins. After leaving a feature, inspect the total stake again. A highlighted switch or changed total is more important than remembering the setting you used on the previous game.
Bound repeated actions
For autoplay, multiply the current total round cost by the chosen number of rounds, then set loss, win or balance stops where offered. Quick spin changes speed, not price, but faster rounds can consume a budget sooner. Use a time reminder as well as a money limit.