Well IMO I think the pricetag for MP11 is relatively cheap. How much did the recent Takara Rodimus and Optimus RRP for? $250?
MP11 vs Hasbro MP - Hasbro MPs are always much cheaper. Seems pointless comparing the two
MP03 vs MP11 - MP03 was released what? 6-7 years ago? Don't think it'd be $119 if it was released today.
When it comes to market prices, you have an atrociously bad habit of pulling out RRP's from years ago and using them as (what you believe to still be) good indicators of todays prices. Hell, you even do it with G1's man. Nobody today is gona scoop up a semi complete Fort Max for the $200 you paid a decade ago.