my short answer is "no".
If it actually comes with the machine (like a Batman 66 LE) ok, fine..it's part of the package. (and it looks awesome)
I have a Munsters LE...there is no frickin way I would pay $400 plus for that ..and it always has some kind of issue anyways. Nice concept, but lousy build.
Lots of guys tinker with it to get it operating correctly..shouldn't have to do that. I have a $29 spooky raven clock from cracker barrel that lights up..talks..and the raven pops out the swinging door...every time. no issues. go figure.
Not a topper guy unless that is the way it comes..(like my MBRLE)
But, like someone mentioned before. It's what you like for the $$..Great...if you are you are thinking of buying with the additional thought that if if you ever would sell it, you could get that money back..not likely. Again if it was supposed to come with a topper and you didn't have it when you sell, well that could actually could decrease the value...but, a 2nd party topper? no.