Yes they are cool, but do you have homes for the potential 200+ babies? Or are you going to cull them all? It takes a lot of refining to get a good combtail, and even then the tail type is undesirable. Are you prepared to cull 200+ babies if you can't find a home for them? Like veils, most people won't even consider to ship them because their cost (even when free) isn't worth the shipping.
I personally like combtails, but I still wouldn't pay to have one shipped to me. =3 So, nothing against the tail type itself, but I would hate to kill off 200+ potential babies because I couldn't find homes for them, and I couldn't keep 200+ babies either.