Brick & mortar tire retailers offer a service component (and additional quality component based on installation).  Online retailers offer branded tires in wide selection and have much larger name recognition.  All new tire vendors are in a largely commodity business give the high level of price competition and must compete on service and/or customer purchase experience.  TW retreads are between 40-70% the price of an equivalent new tire.

Other retread competitors don't sell direct online or have national reach.