How margin is calculated
Margin = notional value ÷ leverage. The notional value is the full size of the position: lots × contract size × price. One standard lot of EURUSD at 1.08 is worth $108,000; at 1:30 leverage it needs $3,600 of margin.
For pairs where USD is the base currency, one lot is simply 100,000 dollars, so the margin does not depend on the price.
Leverage does not change your risk per pip
A common misconception is that higher leverage makes a trade riskier. The profit or loss per pip depends only on the position size. Leverage only decides how much margin is locked, and therefore how large a position you are allowed to open.
Funded accounts at Axora Funded trade at up to 1:30 on forex. Your real limit in a challenge is the daily and maximum loss rule, not the margin.