That's a good price for an electronic scale, but it only goes up to 21 ounces (less than 1.5 pounds). If you ship a lot, you might want to consider spending a bit more and getting a scale that goes up to 4 or 5 pounds. The Office Depot catalog has them for around $32, which is twice what you would pay for the smaller scale, but I think it's worth the investment if you ship a lot (otherwise, it's free to weigh' em at the post office!).
I highly recommend going electronic for accuracy, rather than a mechanical scale.