FYI - A general rule of thumb to guide you - If the submission looks like a mock-up (like a photograph of a letterhead, or business card) it is often a 'stolen' or free-to-use graphic off the internet. It's not a 100% original design. For $650, I'm sure you are wanting original. May I suggest you look at flat graphics (no fancy mock-ups) and then take a screenshot of the icon and drop it into TINEYE.com .... This will tell you if the icon is used anywhere else on the internet. It's not 100% foolproof, but it's a start.