It could be that it’s simply not available for playground.
Just as temperature is locked to 1 instead of 2.
Actually, the HTML indicates (and for me, can) that it goes up to 4,000
<div tabindex="0" class="rc-slider-handle" role="slider" aria-valuemin="1" aria-valuemax="4000" aria-valuenow="4000" aria-disabled="false" style="left: 100%; right: auto; transform: translateX(-50%);"></div>
Perhaps a CTRL+R is in order?