Growing up over seas (Lebanon) I used to mail order from them in the late 50's with a 15 year olds savings. My first order was for a SINBAD 40 glider kit. It was probably priced at $4 + shipping that amounted to $8 total. That followed with another order for a much bigger glider.
Years after that 1975 I visited their location in Manhatten which was in an older 3 story narrow building with basement . Entered it through a narrow steep stairs that led to a space smaller than G&G. After inquiring if this where my orders came from they said they were in the whole building.
Later on while living and working in Saudi Arabia in the late 70's I ordered from them a Bridi Aero Commander and a Graupner Bell 212 helicopter. I had no issues with their delivery, all arrived in good condition. I still cherish my visit when I think about it.