FWIW, anecdotally it seems like a lot of the people who had one of the bottom-end 1000’s like the EX and HX got them around 1990 or so, when the bottom just kind of fell out from under Tandy’s price points for tech as outdated as the 1000 was getting by then. (There are sales flyers on that Radio Shack catalog site that show, for instance, the HX marked down to $299 instead of its catalog price of $699, the TX also drastically marked down etc.)
If you dig through contemporary magazines to compare what you could get for the money over the 1000’s lifetime you’ll see it go from being a killer bargain in 1985, through a ”middle age” between ‘86 and ’89 where it wasn’t necessarily the best deal around but its unique features still made a good case for itself in the “home computer“ niche, to being comically overpriced at its catalog prices around 1990. (Maybe it might be a good second computer for the kids if you got it on sale, which it seems like Tandy was suddenly forced to do most of the time.) At this point I think the only reason it was able to stagger on another couple years was some combination of corporate inertia on Tandy’s part and the fact that there still was a sufficiently large base of customers out there that weren’t sophisticated enough to cross-shop it at ‘real’ computer stores or mail order, options that could be either unavailable or too intimidating compared to just going to the strip mall.
Frankly it boggles my mind that they were still hawking the TL and SL line as late as they were, and at those wishing list prices. The 1991 RSC-22 catalog puts the list price of a Tandy TL/2 with a 40MB hard drive and CM-11 color CGA monitor at $1,900. According to their ad in January 1991’s PC Magazine Gateway would sell you a 386/SX with 4MB of RAM, 42MB HD, Windows 3.0, and a 1024x768 color VGA monitor for exactly the same price… and yet the RL/RLX still somehow managed to make it into the 1992 catalog. Sheesh. I love my T1000s but I feel really sorry for anyone that paid list price for one after 1989…