I am using the price table to hit certain quantity based price points and most of time this is working very well. Thank you.
It would be useful if price points could have a rounding facility. So for example if 6 units at 20.84 = 125.04. Then round down to 125.00
Obviously Price Table module's simplicity is it's strength, so without getting complicated with rounding up and down, just round down to nearest full currency unit.
I suggest rounding down rather than up, as this will never result in somebody being overcharged based on the value of the unit price.