My first set was an Eldon figure 8 like this one. I don't recall it being "deluxe", though. Same two cars, same controllers, same transformer. I bought it with saved allowance, (25 cents/week) and money I got for painting a neighbor's fence. I don't remember the price. Bought it from the local Western Auto store.
The second was an Aurora HO set I bought to use with my model train set-up. It was the old reed-type motors. Aurora had a crossing where the cars could cross the tracks. I bought two of those from the local hobby shop so I could overlap the slot car oval over the train route, which was a folded over dog-bone.
When Eldon came out with their drag strip, I bought one of those on close-out when the Western Auto store went out of business. Mostly with lawn mowing money.