Radio Shack moved from a low rent owned store to a high rent store a few years ago.
Then they started to move into strip centers, lower rent, about the time they started to sell car stereos and phones.
They still sell phones.
But, I can sell phones from a tent in the parking lot, or at a flea market.
I get set up, do my thing at a flea market, sell CB and CB accessories.
Jail break phones, flash to a new carrier, and run free ham radio classes in Spanish.
I breath fire and dance with machetes and in exchange I pay no rent.
In short, I am undercutting Radio Shack, and have one market they had and one market they have.
Since I do not work under contract to any cellular carrier, I can do almost anything, and do!
I took my lessons from "Madman" Muntz, a true artist at sales.
Muntz would take parts out of TV,s to make new sets cheaper.
I take parts out of used TV,s to make cheaper radios.https://en.wikipedia.org/wiki/Madman_Muntz