It gives you an idea of how many people search for the site you type in, whether there is a site there or not. The higher the better. I don't know why people enter a website domain into a search bar, why not just go to the site? But they do it, and it helps with finding popular domains.
"Real Estates" is a funny term, it's so close yet so far. I never hear anyone say 'real estates' when they talk about 'real estate'. It is more like a term that would be a play on real estate, like for a housing development or a tv show.
But hey, the .com does have overture, so people are typing it in that way. A few clicks per week may be good enough because it's a high paying term, though I don't know what you paid for the name.
Also, sounds like there was at least one other person bidding against you, so they see some value too. Good luck with it!