Payvment intergration (stock levels)

Has anyone looked into Payvment and intergrating it with OC, even if just for stock levels?

I'm looking into Facebook Ecommerce solutions and this is one of them. Was wondering about integrating for stock levels only as that's the only thing I'm bothered with right now as I don't like to sell out of stock items.

http://www.payvment.com/developer/

Note, I'm not actually asking for someone to do it right now, just wondering if anyone had looked into it and how easy it will be. (I'm not a dev so would need someone to do it...)

Cheers

I'll definitely be looking into this.