Thanks, John. Very nice of you to say.
Unfortunately, buying on EBay, like most other things in life, is a skill that must be learned. And like many other types of education, there is tuition that must be paid, though in this case, it's paid by making mistakes that one hopes one can learn from.
Last calendar year, I probably bought 7 or 8 dimes on EBay and if memory serves, I returned all but one of them. Over the years, I probably ended up keeping several dogs, for one reason or another.