Ahhh Tandy
Thing that got me with radio shack in the UK, was the pricing. A 741 op-amp was priced at 59p (one 32nd of my weekly wage at the time. However, because I read Popular Electronics, I knew that the Radio Shack US price was 59c.
With the exception of the TRS80 Model 1, this wasn't a problem (UK price £807, US price $807), as locally I had Waltons, Fenwicks & Lings for loads of interesting parts. Plus there was always Tottenham Court Road at the end of a train journey along with the catalogs for Henrys & Proops Brothers!