Its hard to get multi signed film cast photos, and even when you do, they don't fetch the kind of prices that we should expect.
If you have ever been out collecting you will know that attending a film premier is now very hard going. In many cases you need to get there very early to either get a spot or get your wristband to get the best position. You will then have to wait hours, maybe all day, possibly even in the rain, and then hope and pray that when the stars do arrive, you are firstly in the right place, and then that stars deem to pay you a visit and sign your photos. And all the time you will be pushed and shoved with others constantly forcing items in front of yours in an effort to get a signature!
So keep that in mind whe you see those multi signed photos and even posters being offered on ebay for less than a few hours average pay! You know what they say 'if its too good to be true, then it probably is!'