Well, it's something that we've been requested to do by many of our backers and you don't have to put a value, we'll simply put $99 on the package and be done with it.
If you put $10, then we're not going to put that, as it's too low value for what we're sending.
We're simply giving the option, but we've reserved the right not to put the supplied value on the package if it's too low.
We don't want to get anyone in trouble, but likewise, as so many backers have asked for this, we simply couldn't ignore it.