I probably am on the high side for any pricing that I give. There's no sense in working for nothing, unless you have a complex or something.
I can't think of any lidded box that isn't worth $100-$150, and I charge around $200 for mine (the plain ones). Some people aren't happy unless they are spending a bunch, so don't be shy. A good segmented vase or bowl can easily go for $1000, so don't be cheap.