The 9mm normally brings a premium. The case, and accessories do make a difference. The 9mm is not a mass imported US item. It makes it a rare and desired item.
The 45 elite has been recently produced. And mass imported into the US. At the time that they were in stock you could purchase a new one for $900 or less. As they begin to dry up so the purchase price increased.
Adding the black euro case increases the value.
Adding a Merkle weight increases the value.
Factory target, spent shell case, all accessories, all help the value. Condition also plays a role.
Hopefully this helps some.
I’m sure others will chime in with additional information.