I have a question about some order options and wonder if Attrivutes would help at all.

My customer wants to sell their items in cases, and offer discounts for ordering multiple cases. Like:

Say each case holds 10 of the item.

CASES.......UNITS....................DISCOUNT............UNIT COST
1 to 9 .....10 to 90 units ........30% discount.........$15.95/ea
10-19.......100 to 190 units ...40% discount..........$14.95/ea
20-39.......200 to 390 units.....50% discount.........$13.95/ea

(there are shipping charges per case, but maybe that's another post, eh?)

Can Zen Cart support this and if it is the Attributes Controller, pls help me see how it applies.

TIA
B)