For me that first happened with Tandy.
For the hard-core stuff we had Frank Mozer's at Edmonton and I can remember standing in the queue of geezers on a Saturday morning, handing my list over and being told to wait or come back later (depending on how busy they were and how long my list).
See a project in ETI, see if you could order the PCB (you often got one taped to the front for one of the smaller projects), go and get the components from Mozers, build and if it was worth it, case it up with an two part ally case from FM (they used to have a stack on display to choose from). ;-)
Cheers, T i m