Clickbank contextual script

Lately I've signed up with clickbank to test it on my sites where adsense is not an option.

My goal was to create some sort of script that will display contextual ads with clickbank products.

The problem was that there was only one script for this thing (and one service which I didn't really liked) but for the price of $200!

So I thought to create this script myself :)

What do you think. Should I make this script more user friendly and start selling it? A price of $50 would be fair for such a script?

The script works like adsense in the client side, and has contextual or keyword based targeting.
It can also give statistics like CTRs, with channels, etc.

What do you think?

EDIT : The script is finally ready. You can check it here :)

Does clickbank  have an affiliate scheme? if so, often these are better returns the clicks, so if it does how about offering your script free to your affiliates ;) You might get more takers, sure its not $50 a pop but if your earning a percentage or per signup it might be worth while.

They have an affiliate scheme but only for sellers, not publishers....

A script like that could be really helpful, I am hand picking different clickbank products to rotate on one of my websites.

I think the clickbank referral system only pays you a percentage per sale when someone signs up thru your affiliate link to start selling their own product. So only for advertisers, not publishers

I found this site today http://www.affiliatesensor.com/

Right but this is a program where you give them percentage of your pageviews, which is not so cool (and you can't actually know if they are legit)

:D that's right...