A good scale with modest precision in the 0.1 gram range is a real nice addition to any brewing setup. Its good for measuring mineral additions and great for measuring hop additions. I have an old Ohaus triple beam scale that I don't have to worry about. With some accessory weights, I can measure up to 2 or 3 lbs at a time. But that's not really that scale's purpose. I suppose some sort of hanging scale would be more appropriate for measuring bulk malt additions? That triple beam is fine for measuring accessory malt additions though.
I'm betting that a sharp eye on Ebay would find a decent deal on a scale with decent accuracy and capacity.