I try to be real cheap about this hobby, so I don't have a lot of money tied up in any of them.
Recently someone commented on how many cars and trucks I have, and I pointed out that I've paid less total for about two dozen trucks, a Corvette and a Cadillac than I did for my wife's Subaru. I did the math twice and its an accurate statement. I recently committed to buy a '57 Chevy, and it should still be true after I pay for that one.
But my wife doesn't care about the money aspect so much as she does just knowing how many of them we have. Two or three of mine are out at Jeff's and I have mine parked in different areas of our yard just to keep her from having to confront the real count...