I remember the original store on Oak Park Ave in Tinley used to go there then moved on harlem ave put a set of 2343 AA and B unit on layaway yes layaway My wife bought a complete blue comet set from there for my Birthday back then as well.
Still have the above trains and will pay you guys a visit in near future ole 66 as i bought the DCS setup there in 2002 still works great .
Welcome to the forum.