PJ,
I bought my scale last month from this company:
http://www.balances.net/siltec/ps500.html

Just be sure when you call not to double check the price
listed on the web page. The guy just about chewed my head
off for asking. He said that "why should they bother spending tons of money building a web site if people are just gonna ask the price anyways". I told him "Im sorry, I thought you wanted to sell scales !" being a little sarcastic, and he said "quite frankly, I don't care if you buy one or not, we have the cheapest scale of this kind ($179) and their nearest competetor sells their scales for 600-800 dollars. This guy was a real peice of work. I ended up calling back and talking with someone else cause I could not find a cheaper scale anywhere else !!

Hope this helps,
Craig