DIfferent levels of membership at Registration

[Big Kahuna]

I would love to see a 3.8 up add-on like what autoguide.com and att use for their registration.

Upon clicking the registration link -- the prospect is offered a free membership (with sidebar advertising) or year by year or lifetime paid for without. They use Subscriptions to accept payment and maintain the year to year, and usergroups to maintain if the member gets the advertising or not -- so it is only the registration part using the subscriptions that is needed.

Since more than one site has this -- I assume it must be available either free or paid for -- but my searches hasn't found it anywhere. If you look in the 3.8 addons forum under the registration addon -- you will see more than a few would like this version over the version currently available.

Does anyone know where I can find this script -- or is there anyone up to the challenge to create this much needed addon?