Is there pure olive oil in store?

No they have mixed oils like olive and soybean or olive and canola. Your best bet for pure olive oil is Walmarr or Frys.

Yes in 2 varieties

Im not sure, but there produce is great

With the 99 Cent Stores it's always a hit and miss on what you'll get there's times that you can get exotic oils or expand what should be expensive items and yet you can't find something as simple as you know mustard or ketchup at three example so unfortunately you're going to have to just go check it out yourself hope that helps

Not really sure but there should be.