Trade Commissions , можете ли да ми покажете къде бъркам не се получава
<?php
$city=strtolower(readline());
$sales=floatval(readline());
$commission=-1;
if($city=='sofia') {
    if($sales>=0 && $sales<=500) {
        $commission=$sales*0.05;
    }else if ($sales>500 && $sales<=1000) {
        $commission=$sales*0.07;
    }else if ($sales>1000 && $sales<=10000) {
        $commission=$sales*0.08;  
    }else if ($sales>10000 ) {
        $commission=$sales*0.12;  
    }
    else {
    echo 'error';
    }
    printf ("%0.2f",$commission);
}else if($city=='varna') {
    if($sales>=0 && $sales<=500) {
        $commission=$sales*0.045;
    }else if ($sales>500 && $sales<=1000) {
        $commission=$sales*0.075;
    }else if ($sales>1000 && $sales<=10000) {
        $commission=$sales*0.1;  
    }else if ($sales>10000 ) {
        $commission=$sales*0.13;  
    }
    else {
    echo 'error';
    }
    printf ("%0.2f",$commission);
}else if($city=='plovdiv') {
    if($sales>=0 && $sales<=500) {
        $commission=$sales*0.055;
    }else if ($sales>500 && $sales<=1000) {
        $commission=$sales*0.08;
    }else if ($sales>1000 && $sales<=10000) {
        $commission=$sales*0.12;  
    }else if ($sales>10000 ) {
        $commission=$sales*0.145;  
    }
    else {
    echo 'error';
    }
    printf ("%0.2f",$commission);
}