Your question is a few months old now, but you seem to be stirring things up around here. 18 Rockshore sold in June of 09 for $$4,420,000. List price is was $4,695,000. It was previously listed in November of 08 for $4,998,888.
There are various sections to it, the first level are condos and only a few floor plans, futher up you go there are semicustom and custom built homes. And empty lots incase you don't find what you want, you can build your own. Prices will vary between them, condo vs SFR. Square footage, Lot size, pools/spa, views, year built, plan or custom, and more.
Buyers agents must do their comps, review, adjust accordingly for lot and home size, adj for amenities, view, for starters - more depending on the property itself. The SFR in Crystal Cove can very from about 4000 to over 13,000 square feet.
Per MLS -as of today, there are 32 homes for sale in Crystal Cove. Only 1 is in Foreclosure process, and 2 are Short Sales. I search the MLS for REO/Foreclosure process SALES since 1/1/2010 - Non. Of the 32 listings - 5 are condos, listed from $2,195,000 to $2,750,000, and 28 Single Family Residents listed from $2,795,000 to $19,990,000. The two most expensive SFR were built in 2010 and are an excess of 13,500 sq feet - and that is the house, not the lot size. The smallest Single Family Residence is just under 3200 sq feet. The smaller condo listed about 2850 square feet - the largest condo listed is less than 3900 sq feet.