Let's see:
It is a larger model
- It has a much more complicated color scheme
- There's a large painted fiberglass cowl
- It's the only one of it's type to be available,
- plus it looks really cool!
And, there's a lot to be said for Cool....
That's worth an additional hundred bucks by itself
-Only the TOP WING is slightly larger. The lower wing is smaller than the Stearmans. Which puts the plane in the same size range as the Stearman.
-The color scheme may require many individual pieces of Monokote but both GP Stearmans also have complicate color schemes
-The Stearman also has a fiberglass cowl plus a dummy engine. And the Super Stearman also has wheel pants
-And it doesn't look $100 more cool. As a matter of fact, the steep price makes it suddenly look not cool at all. It makes it a total turn off.
It ain't cool [&o]
Nope ... changes to not worth the the price, let alone $100 more.
That's what happens when people try to price gouge other people.