input event with input[type="range"]
testing to see if using input event works better than change
HTML
<div style="margin-top: 1em">
<h2>Price</h2>
$0<input id="price" type="range" min="0" max="50000" value="" />$50000
</div>
<p id="result"></p>
CSS
#result {
font-size: 2em;
}
JavaScript
var p = document.getElementById("price"),
res = document.getElementById("result");
p.addEventListener("input", function() {
res.innerHTML = "$" + p.value;
}, false);