function tradeCommissions(input) {

    let town = input.shift();
    let sales = Number(input.shift());
    let commission = 0;

    let result = Number(input.shift());

    switch (town) {

        case "Sofia":

            if (sales >= 0 && sales <= 500) {
                commission = 0.05;
                result = sales * commission;
                console.log(result.toFixed(2));

            } else if (sales > 500 && sales <= 1000) {
                commission = 0.07;
                result = sales * commission;
                console.log(result.toFixed(2));

            } else if (sales > 1000 && sales <= 10000) {
                commission = 0.08;
                result = sales * commission;
                console.log(result.toFixed(2));
            } else if (sales > 10000) {
                commission = 0.12;
                result = sales * commission;
                console.log(result.toFixed(2));
            }
            break;

        case "Varna":

            if (sales >= 0 && sales <= 500) {
                commission = 0.045;
                result = sales * commission;
                console.log(result.toFixed(2));

            } else if (sales > 500 && sales <= 1000) {
                commission = 0.075;
                result = sales * commission;
                console.log(result.toFixed(2));

            } else if (sales > 1000 && sales <= 10000) {
                commission = 0.1;
                result = sales * commission;
                console.log(result.toFixed(2));

            } else if (sales > 10000) {
                commission = 0.13;
                result = sales * commission;
                console.log(result.toFixed(2));
            }
            break;

        case "Plovdiv":

            if (sales >= 0 && sales <= 500) {
                commission = 0.055;
                result = sales * commission;
                console.log(result.toFixed(2));

            } else if (sales > 500 && sales <= 1000) {
                commission = 0.08;
                result = sales * commission;
                console.log(result.toFixed(2));

            } else if (sales > 1000 && sales <= 10000) {
                commission = 0.12;
                result = sales * commission;
                console.log(result.toFixed(2));

            } else if (sales > 10000) {
                commission = 0.145;
                result = sales * commission;
                console.log(result.toFixed(2));
            }
            break;

        default: console.log("error"); break;

    }
}

tradeCommissions(["Plovdiv",
    "499.99"])