shopping cart price rules

[smallfish]

shopping cart price rules
For example :
Here are a few of the discount type promotions you can offer:

Buy 1st 10% discount off, 2nd item 15% off, 3rd item 20% off, etc.
Buy 2 pants and receive 20% off belts
Buy 1 shirt and get the 2nd 50% off
New customers receive 10% off
Customers who have purchased more than $500.00 in the last 6 months get 15% off
Buy 3 dress shirts and receive any tie for $10.00
Buy any 3 products from the "shoes" category and receive 20% off the cheapest / most expensive
Buy any 2 shirts and receive 10% off the cheapest / most expensive
Buy a book and receive the 2nd book free (or 30% off, 75% off, etc)
Save $5.00 for every $100.00 spent
Get 10% each 3rd (or 2nd, 4th, etc) product purchased
Get any shirt and tie for $50.00 (in total)
Get 15% off all products in the cart after the 3rd product
Buy 2 shirts for normal price and each shirt thereafter for $30.00
All books for $4.99