You can click on the following link http://tinyurl.com/2bwjc2 to see current condo listings with the square footage over 2000 sq. f. in Menlo Park. Their prices are from $1.225 M to $ 1.995 M. There are no listings in this category in Atherton at the present time. The values in this area are staying high due to the limited supply and increase demand coming from Silicon Valley. Good luck in your search (by the way keep checking your link as it will be updated automatically with new listings).
But the true test is days on market and sales. If you look at current listings you'll see about 11 available with an time on the MLS of 104 days... and that doesn't include the listings that were taken off and added back to reset the avg days. Now to look at sales you'll see 14 sold in the last year, so you're looking at about 1 buyer per month, who probably takes the best of the available inventory at the best value. The best priced ones sell, and the higher priced ones sit on the market.