[Rise]

Igorsrt,

<select id="persons">
	<option value="0">50-100</option>
	<option value="1">100-200</option>
</select>
<select id="person">
	<option value="0">man</option>
	<option value="1">woman</option>
</select>
<span id="price"></span>

<script>
var persons = document.getElementById('persons'),
	person  = document.getElementById('person'),
	price   = document.getElementById('price'),
	prices  = [
		[2000, 2500], // 50-100
		[1900, 2400], // 100-200
	];
	persons.onchange = person.onchange = function() {
		price.innerHTML = prices[persons.value][person.value];
	};
	persons.onchange();
</script>