I don't plan on buying this one.
I couldn't comment on third-party product and whether it represents 'value for money'; it doesn't interest me and I won't buy it.
My point is that judging by all the hinges and seams, it appears to have a very complex transformation and will likely have a high part count, especially in something that's a little over half the size of MP Ultra Magnus. That complexity is what you're paying for.