You must have been playing around with the other options ...
MK Dlx with SI electronics: 15,200
SI: 13,500
That makes the SI cost 1700 less, not more.
Monthly special for July is 15% of base price to be applied to custom options.
MK: 1425 - net price 13,775.
SI: 2025, which would leave just 175 required for the upgrade to cocobolo (standard on MK Dlx) - net price 13,675
So a lot depends on the monthly special ...
Other than that, there don't seem to be any differences in the build details.
The SI body has a few additional cavities because the electronics take up a lot more space than the regular Signature package, but of course an MK + SI electronics needs to have the same cavities. Not sure how much more wood would be removed for a chambered body.
(Message edited by adriaan on August 06, 2008)