How do i know what product did I sell?

Ok so I made my first two CB sells. The problem is I can't figure out what products were sold. I don't see anywhere in the transaction reporting nor in the analytics reporting a reference to the product. The item number doesn't speak to me, and I can't search the marketplace based on a number. On top of it, the fact that the amounts in the transactions don't match the payout of any of the products I was promoting doesn't help. And why is that in the first place anyway?

Please someone enlighten me.

Anyone?

go to reporting -> transactions, copy the vendor id and paste it in a hoplink (eg.
http://1.VENDOR.hop.clickbank.net)

What's the logic of this? How did you figure it out?
Also, why is the payout variable?