[Manyasha]

gdvorc,
может так?

<script src="https://code.jquery.com/jquery-1.9.0.min.js"></script>
<script>
$(function(){
	$(".cart-item-pr").each(function(){
  	var price = $(this).find("td.price span").text();
    $(this).find("input.rchecking").filter(function(i, e){return $(e).val() == price;}).prop("checked", true);
  });
})
</script>
<table>
<tr id="" class="cart-item-pr">
  <td class="weight">
    <input type="radio"  class="rchecking" id="c2" name="price-hours1" value="100" /><label for="c2"></label>
    <input type="radio"  class="rchecking" id="c3" name="price-hours1" value="200" /><label for="c3"></label>
    <input type="radio"  class="rchecking" id="c4" name="price-hours1" value="300" /><label for="c4"></label>
    <input type="radio"  class="rchecking" id="c5" name="price-hours1" value="400" /><label for="c5"></label>
  </td>
  <td class="price">
    <span id="price">200</span>
  </td>
</tr>
<tr id="" class="cart-item-pr">
  <td class="weight">
    <input type="radio"  class="rchecking" id="c2" name="price-hours2" value="100" /><label for="c2"></label>
    <input type="radio"  class="rchecking" id="c3" name="price-hours2" value="200" /><label for="c3"></label>
    <input type="radio"  class="rchecking" id="c4" name="price-hours2" value="300" /><label for="c4"></label>
    <input type="radio"  class="rchecking" id="c5" name="price-hours2" value="400" /><label for="c5"></label>
  </td>
  <td class="price">
  <span id="price">400</span>
  </td>
</tr>
</table>

айдишки намеренно не использовала. т.к. они наверняка разные будут.