<input type="button" value="Add More" id="more_size">
<span id="add_more"></span>

<input type="button" value="Add More" id="more_size">
<span id="add_more">
    <span id="1001"><input type="text" name="price[]">
    <button data-id="1001" type="button">X</button></span>
</span>

<input type="button" value="Add More" id="more_size">
<span id="add_more"></span>