Richer than dreams of averest

Posted by Deb Tompkins on March 25, 2005

I've heard this phrase since I was a kid and like others it was used in Warner Brothers cartoons. The most recent use of it I recall was by Deforest Kelly (Dr McCoy)in Star Trek 4. When he and 'Scotty' are promising the plastic manufacturer a formula for a better product in exchange for some of his current product.
but what does it mean? bear in mind I'm not sure of the spelling of 'averest' , just going by how it sounds.
I've tried several searches with no results...