Get real, Neil!
Once you've done the "How To Become An Ace Salesman" course (or, read the book ... or, better yet, tagged along behind an
actual No.1 Sales Guy for a while), then all you need to do is read the brochure (of each new piece of kit)!
I have seen super-salesmen do this, with great success.
I hasten to point out here that I am not talking about myself, of course.