It does help to remember that shipping can add 2-5 dollars to the price of the book; depending on the book that can range from who cares to a fairly big increase. But for a 50+year old book in scan suitable condition, anything under $10 seems really cheap to me. But your view might vary.
I was already planning to get at least a few Pictorial Romances in my next lot; some wonderful Matt Baker romance from the few I've seen. But Jim sent me a bigger batch than I was expecting, so it will probably be another month or so before I get a new delivery from him. (I should be sending back the first box of books on my day off this week, though.)
Not sure that I've made a name for myself yet, Yoc, but it's nice of you to say so. The one scanner who I will always download is Cimmerian32; his books look incredible.