make a Slider to adjust start and end value

Sure. I'm showing the relevant code for the slider only:

$("#sell_price_slider").slider(
{
	handles:[
	{
		start:1,
		min:1,
		max:9,
		id:'sell-price-slider-min'
	},
	{
		start:9,
		min:2,
		max:9,
		id:'sell-price-slider-max'
	}],
	range: true,
	min: 1,
	max: 9,
	slide:function(e, ui)
	{
		// events while the slider is being slid go here
	},
	stop:function(e,ui)
	{
		// events when the slider stops go here
	}
});