I know this an old post, but I lived 3 blocks from GET. Beside all the stores mentioned, they also had a barber shop. Simpson's Barber. I had my hair cut there until he retired and then I went to his brother on Ocean Avenue in Lakeside Village until he retired. As a kid, the barber shop had a great selection of comics.
The sporting goods store in GET was near the barber shop on the east side and down stairs.