Graphic River Invoice

[Pixart]

I've never paid "cash" on Graphic River before (vs putting money into account to spend later),  so this is the first receipt I've received that looks like this.  What does the designer make on this?  It was a $9 item.  Seems very weird - I suppose the $1.8 is a service fee (on top of their Handling fee!) and the seller gets a percentage of the $7.20?

Description: Deposited $10.00 via paypal for:

Handling fee $1.00
Buyer fee $1.80
Item purchase $7.20


Invoice Total: $10.00