joker97: for property yes. for electronics, no. you want to buy an 1 and an 3?
As far as lenses go, the ones to which he refers, they are never referred to as electronics, despite having some electronic function. They are glass which, if looked after, will not deteriorate with age. The comparison to which I was referring was merely a way of of identifying my thoughts on the matter, which is to buy the Professional lens, even though it is second hand as it will almost always be a better lens.
BTW, if you applied my analogy to your electronics it would be more like would you buy a second hand genuine iPhone or buy a cheap new copy of that phone.