PayPal use in Classifieds - Anyone up to the challange

Ok, In my opinion I think this would be a good Idea and a good mod if someone could come up with it.

As of right now, when using classifieds there is an option to enable the buy now button.  This button will send both parties an email with notification that the sale is "agreed upon" and then it is up to them to come up with payment method.  I know there is mod out there for PayPal button to be added in the profile but there has to be one for classifieds, right?

My idea is this.

Keep that idea but also include an option to enable an actual PayPal button or donation button that will go to the actual PayPal payment pages.  This button would be displayed just like the buy now button on the classifieds.  This would be only viewable to people who have an account.  Now I am not a coder or I would do it my self if it was possible.

Is this type of modification possible?  If so, is there anyone up to the challenge of making it?  Maybe have it integrated for the next version of dolphin? Maybe this mod is already out there but I have not found it yet?