A helper script for playing http://minmaxia.com/basic/

console.js

function hackElement(el){
    var priceText = el.getElementsByTagName("tr")[0].getElementsByTagName("td")[1].innerText.replace(/[,$]/g, ""); 
    var tickText = el.getElementsByTagName("tr")[1].getElementsByTagName("td")[1].innerText.replace(/,/g, ""); 
    if (priceText === "" || tickText === "") {
        return;
    }
    var price = parseInt(priceText);
    var tick = parseInt(/(\d+)\/tick/.exec(tickText)[1]);
    var value = price/tick;
    var tbody = el.getElementsByTagName("tbody")[0];
    var newTR;
    var value;
    var valueLB;
    if (tbody.childNodes.length > 2){
        newTR = el.getElementsByTagName("tr")[2];
        value = newTR.getElementsByTagName("td")[1];
        valueLB = newTR.getElementsByTagName("td")[0];
    } else {
        newTR = document.createElement("tr");
        valueLB = document.createElement("td");
        value = document.createElement("td");
        newTR.appendChild(valueLB);
        newTR.appendChild(value);
        tbody.appendChild(newTR);
    }

    valueLB.innerText = "Value";

    value.style.textAlign="right";
    value.innerHTML = (price/tick).toFixed(2);

    var container = el.getElementsByClassName("game-building-container")[0];
    container.style.height = "55px";
}

function refresh(){
    var all = document.getElementById("buildingContainer").childNodes;
    for (var i = 0; i < all.length; i++){
        var el = all[i];
        hackElement(el);
    }
}

document.onclick = function(e){
    refresh();
}