function price0301(amount) {
var res = 0;
if (amount > 500) { res =  amount * 1 + 1250;} 
 else if (amount > 249) { res =  amount * 3 + 249;} 
 else if (amount > 129) { res =  amount * 2 + 500;} 
 else if (amount > 119) { res =  amount * 3 + 370;} 
 else if (amount > 99) { res =  amount * 4 + 250;} 
 else if (amount > 29) { res =  amount * 5 + 150;} 
 else if (amount > 9) { res =  amount * 10 + 0;} 
 else if (amount > 1) { res =  amount * 9 + 11;} 
 else if (amount > 0) { res =  amount * 19 + 0;} 

return res;
}

function price0303(amount) {
var res =  (amount * 0,9);

return res;
}

function price0310(amount) {
var res =  (amount * 5);

return res;
}

function price0401(amount) {
var res =  (amount * 5);

return res;
}