Coupon with Variable Percentage Per Category

Hello,
as Subject title says,
I want to create a coupon with variable percentage per category
for example coupon code " COUPON "
gives 5% percentage discount for products in Category A
gives 10% percentage discount for products in Category B
gives 3% percentage discount for products in Category C
not for the total, is it possible?
is there is a commercial or free module/extension that achieve this concept ?

If you mean you want to combine discount for products from different categories, then no, I doubt you will find a ready solution. The closes you can get is my Advanced Coupons extension, but it might require customization if you really need a per product-from-category discount.

Super Coupons can do this. If you use the same coupon code for multiple coupons, then when that code is used, it will apply all relevant coupons. It can also do discounts on a per-product or per-category basis. For example:

------------------------------------------------------------------------------
COUPON #1
Title: 5% Off Category A
Code: MYCOUPON
Charge Type: Flat Charge
Charge Field: -5%
Rule: Category is Category A

COUPON #2
Title: 10% Off Category B
Code: MYCOUPON
Charge Type: Flat Charge
Charge Field: -10%
Rule: Category is Category B

COUPON #3
Title: 3% Off Category C
Code: MYCOUPON
Charge Type: Flat Charge
Charge Field: -3%
Rule: Category is Category C
------------------------------------------------------------------------------

Feel free to take a look at the screenshots and demo site, and if you're interested let me know at www.getclearthinking.com/contact if you have any further questions.