As said above by Greg,

chatterbox — Mon, 03 Aug 2009 18:49:30 +0000

As said above by Greg, Paypal is currently the most used payment processor. Its legit, safe, trusted and secure. There are others like Alertpay, Moneybookers, LibertyReserve, e-gold, Pecunix, Neteller(new), etc.. But the stability and number of customers on Paypal is unparalleled.

To offer a service like

greg — Fri, 31 Jul 2009 03:17:00 +0000

To offer a service like this, paid or free, it would have to be better than search engines. Offering something more than what search engines, directories and local business listings already do for free.

Even if you performed the searching manually for them to get a better result, in truth I don't think many people would pay for such a service.

I presume by "third-party tool to help with the monetary aspect", you mean a payment gateway?

If yes, Paypal is one of the most used and is fairly easy to setup (depending on your requirements)
There are others, that work similar to Paypal, but it is the most recognised out there.

And welcome to the forum