<?php

$id = array("price" => "10");

$id['price'][1] = $id['price'];
$id['price'][3] = ($id['price'] * 3 * 0.97);
$id['price'][6] = ($id['price'] * 6 * 0.95);

$id['price'][3] = round($id['price'][3],2);
$id['price'][6] = round($id['price'][6],2);

foreach($id['price'] as $money) {
  echo '<option value="'.$money.'">.'.$money.'$</option>'."\n";
}

?>

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