Need coupon script

Hi
I need a coupon script
similar to
http://www.couponscript.com/demo/index.php?page=viewbus&bus=10

http://www.spads.com/couponspro.html

http://www.phpcoupon.com/index.php

I require the script to be PHP
I require a mixture of features included in above scripts
I am prepared to pay $200 for the script to be written.

regards paul