a question concerning props

okay, i guess this is one of the questions you can't simply answer with yes or no but more a matter of your own opinion, but i hope i get some good feedback anyway.

when is it a good thing to buy screen-used props?

i know that answering this question depends on what prop from which film it is, and some props can be an investment of money while others are nothing more than a souvenir, but where is the border?

the reason i'm asking: some weeks ago i found the screen-used outfit worn by Til Schweiger in the movie Far Cry (i actually dont know if the movie was successful enough outside of Germany for you to know it ) on ebay, consisting of a pair of cargo shorts and an aloha-shirt, for...i think it was 350€. you could easily get the same clothes (or at least something that is almost the same) for much less than 50€.

so my question is, besides hardcore-fans of the movie and the videogame series perhaps, would anyone really considering buying it just because it was screen-used?

Hey MadMike-

You definitely ask a question that probably rings in all of our heads. I see collecting a prop just like collecting a piece of any other type of artwork- if it appeals to you then it belongs in your collection!
I finally decided to purchase a piece of the Death Star from Episode IV from the PropStore; one of the first things that went through my mind was, "OMG, can you imagine what this will be worth in another 50 years?" The reality is I will most likely never part with my beloved hunk of the Death Star no matter what the price offered.
Prop collecting is like any other hobby, do what you enjoy!

Of course, if you're looking at it from an investment standpoint, I would purchase props that are hot items and will maintain their popularity for years to come.
Good luck on your decision!