[Buying]  Have $$$$ Want sealed dragoons

Currently looking for 

Sealed Hasbro HMS Dragoon MS (NIB) Wanting to buy within a month or 2
I was looking at those but I was also wondering are hasbro blades just a lot more than takara tomy when it comes to vintage because these are 200-300 but the only hasbro dragoon MS is 400 I was just curious why such a big gap.