For sale is a Peterson Engineering Eye Opener for Meade SCT scopes (was purchased for a 12" that I no longer have).
I think this one is the version 1 eye opener, but serves the same basic purpose - to open up the optical path for 2" eyepieces.
See link here on the Peterson Engineering website http://www.petersonengineering.com/sky/EO.htm
Looking for $60 + $10 Express post Australia wide.
Enquiries via PM please.