[ic] adjusting price total instead of individual items

[Matthew Daniels]

How do I handle the case where the price break for buying a large amount 
of items needs to match a specific (round number) total?  For example, 
if you buy 500, the subtotal should be 660, so I set the q500 price to 
1.32 and it works as expected.   But for the 350 tier, the subtotal 
should be 506, which results in a per-item price that is not a repeating 
decimal.  If I put a very precise number in there it works, but I'm 
worried about rounding errors.  Should I be?


Matthew