I don't know if this helps, but at my SD store, the 2005 Optima was shown on sale for $7995, came with the basics including cover lifter and steps. I purchased the 05 Optima last week for $8,600, but includes CD/Am-FM Stereo, and a few other extras they threw in. I hope I got a good deal. Hubby really wanted the stereo, so we went with it for another $600. Of all four spas we wet tested, I really liked the Optima best. Second favorite of tubs we tested was the HS Envoy, and it was priced at $8,550 without a stereo.
Good luck