sams club or costco always have decent scales for a good price. Picked up a $20 one just the other day, keeps track of 4 different weights, lets you know how much up or down you are each time you weigh yourself.
similar to this [ame="http://www.amazon.com/Health-Meter-HDM690DQ-95-Tacking-Metallic/dp/B0014JRASQ/ref=sr_1_1?ie=UTF8&s=hpc&qid=1228152906&sr=1-1"]Amazon.com: Health o Meter HDM690DQ-95 Weight Tacking Scale, Black / Silver Metallic with Backlit Display (Weighs up to 380lbs): Health & Personal Care[/ame] just different model and records 4 users