round up pricing decimal

Hello!

We import from a sheet that notes prices in €.
We want to calculate those prices to DKK.
Furthermore, we want a snippet to round prices up to nearest whole 10 number and then subtract 0.05.

So a price in € of 100 should get multiplied by 7.44= 744
Then round up to nearest 10 number = 750
Then subtract 0.05 = 749.95

I think php should be:

function round_price_with_limits( $price = null, $multiplier = 1, $nearest = 10, $minus = 0.05, $map = 0, $msrp = 9999999999) {

    // Ensure a price was provided.
    if ( !empty( $price ) ) {

        // Calculate price with markup and round it.
        $rounded_price = ( round ( ( $price * $multiplier ) / $nearest ) * $nearest ) - $minus; 

        // If price is less than minimum, return minimum.
        if($rounded_price < $map){

            return $map;

        }
        // If price is greater than maximum, return maximum.
        elseif($rounded_price > $msrp){

            return $msrp;

        } else {

            // Return price otherwise.
            return $rounded_price;

        }

    }
}

Does this seem correct?