LOL ive tried those walmart scales. they arent acurate enough! not even close. you need to stop by a few minute marts and ask if they've got em. most of them will tell you no, but they will tell you where one is thats got em.
weird place, but around here portland or van wa area they've got em at probably 2 out of 5 minute marts? check it out and dont buy the ones from walmart or target.. much too big anyway.