Somewhat along the lines of what Tony has just said, very nicely too, I think that John is experiencing that buyers usually like to see very clearly what they are potentially buying unless they are worldwide collectors out for a treasure hunt.
When you get what you want then paying a little bit more for a well photographed or scanned item with perhaps a good description and title also means you are paying for the gathering, identifying and presenting abilities of the seller, more or less. It saves you time sorting and hunting through loads of mixtures and wrong stamps and that is worth something it seems.
I would be interested in knowing, John, if you have had a lot of repeat customers or if most customers are of a one purchase type.
My idea of how you (as a family) deal with customers is top rate and I wouldn't be surprised that just that has something to do with your sales.

A seller's attitude comes over in how he deals with people, whether he tries to hide it or not, and I have always had an impression of honesty and good will from you all, whether your listing titles and descriptions are top rung or no, by my standards.


The best in
2013 2012 too (oops) to you all also!

edit: no need for me to speed up the clocks is there?!