If you're a follower of Alton Brown, you know that he gives a lot of his recipes, especially baked goods, in weights, so a digital scale is a very useful thing.
Check in the phone book for a restaurant supply warehouse near you. Those are probably the best places to get a scale, not to mention a LOT of other things.
If you can't find one there, look for a Bed, Bath, and Saddam store. They usually have a very good selection of kitchen goods. There are other, kitchen specific stores, as well, like Lecter's.
Finally, I would stay away from the scales that have recipes & nutritional information. They have books and websites for that kind of information, and reading the display on a digital scale can be a bit of a challenge even in the best of circumstances.
Essentially, all you need is weigh, tare, and switch between English and metric ability.
A one kilo capacity scale should be the very minimum. Weights start adding up when you start adding ingredients and you also have the weight of the bowl. 5 kilo (11 pounds) is a lot better.
