With this in mind, I advise avoiding mass-produced material as much as possible. By that I mean single signed balls of common signers, common signed flats, etc. If it has a Steiner sticker, it's probably not rare.
Go for items that are less common. If you really want a signed item from someone who is in plentiful supply, get one with a less common inscription. This applies to all collectibles, not just baseball autographs.
|Derek Jeter may be signing baseballs for another 50 years.|
Will you ever get $400 back out of it?