The 3000 building was part of the second phase, IIRC, so is about 4-5 years old. It may have received a soft goods update this year. The condition of the sleeper sofas is usually a good indicator.
Check out this old (very large) picture of the resort from 2002. The oldest buildings, like the 2400, flank the administration building, adjacent to the main pools.
http://www.californiacoastline.org/...ode=big&lastmode=sequential&flags=0&year=2002
The outside of the buildings and the landscaping should be in immaculate condition, if our experiences there are any indicator. One only notices other issues when inside the older units and when staff is short-handed for the customer load.
For the OP, 9K is a good price. EY's are going from 16-19K. That said, a year to 18 months ago, you could get a good EY deal for what you paid EOY. Those days are likely gone, but IMO demand is softening and Marriott is continuing construction of the new phases on schedule for 2009. I'm going to take a hard look at things in 2008 to see if we'll continue there, as we own in both seasons.
Good luck with your purchase. Great location and overwhelmingly a great resort
Pat