Beauty Care Precision Tweezers

I did not find these tweezers very good at removing the more stubborn courser hairs compared with the other tweezers m and s sell which are the narrower headed ones which come with a light-they are more expensive but worth the extra cost as they have excellent performance.Unfortunately ,I am needing to replace mine,but having difficulty finding an m and s that stocks them-Is there any reason for this M and S or are they only available around Christmas?