Hi There, you have to look at it this way.
You have a scope and other stuff to sell, it has served you well no doubt.
To you it is in top condition and you would like close to what you paid for them, but it doesn't quite work that way.
The items are second hand, and at best are worth only 2/3 of the original price, even in top condition.
You have used these items, it is a bit like buying a new car, once out of the show room it has devaluated.
And if you put top dollar on them, you will end up keeping them, sorry...
Leon
