A sort-of upmarket competitor to Henry's etc. was 'Home Radio' - very much the Waitrose end of things. I had one of their catalogues as well (with an artistic Barbara Hepworth scuplure on the front, you'd never get that with Henrys).
I never bought anything from Home Radio but the MD used to have an occasional column in one of the hobby magazines. I remember him writing, only semi-jokingly I presume, about their stock control methods. He said that each stock item was stored in a cardboard box, and every so often they'd look at each box:
- if it was nearly empty, they'd order some more
- if it was empty and tatty, they'd order a lot more
- it the box had dust on it, they'd order a few more
- if it was full and had dust on it they'd think about discontinuing it ect.
As the years have gone by I have occasionally considered that there are worse methods...
J^n