I have to side with Hasbro on this matter.
Does this custom Power-Up Prime look incredibly awesome? Yes. Is it better than what I can find on the shelves? Yes.
Would I pay upwards of $200 for it? Hell no.
People seem to forget these toys are aimed at kids first and foremost. As I've said time and time again on numerous sites, I have never heard a kid say he didn't want a new toy because "there isn't enough paint" or "there's not enough articulation." For the average consumer, Hasbro's Leader Prime does the job well enough.
(Yeah, I know someone will counter with, "Leader Prime is so complicated, no KID could figure it out on his own!" but that's not the point I'm trying to make here.)
And besides, if Hasbro made perfect toys there'd be nothing to complain about and customizers would be out of a hobby.