The bids on overture are not that high for these terms, but the adwords on Google look promising. There are alot of people turning to realestate as an investment and career. There are also alot of realestate courses, Carlton Sheets, etc...I think these can do well with attracting ads. "LearnRealEstate" was taken in every ext except .org. "BuyingRealEstate" was taken in most of the other exts.