Car scratch removers

[ShawnHoo]

So last night the valet at Commerce is closed and I park in the self-park lot for the first time in a year. Of course, I get home to find that the top of the trunk of my new car has been keyed.

Has anyone used those car scratch remover/polishes that I've seen advertised on TV? Does anyone know of any other way to get a scratch out? How much will this cost me if I have to take this to a body shop?