Using Vbulletin points on an online fidelity store?

[Quotealex]

I got this idea of intergrating vbulletin to an online store where users could use their points (that the got from posting/replying on the threads) to purchase stuff on an online store. For each purchase, of an item, a number of points would be deducted from their account automatically. For example, if a user that has 250 points from postings on various threads, purchase a watch that cost 100 points, will see his point deducted to 150 points on is Vbulletin profile.

Is that possible and does such a store script already has this setup?

Thanks