I had one, too, got it in 1983, picked up a bunch of peripheral equipment in '84. I used it for my Seahawk card wantlist until 1997, when I started using my then-wife's computer. Eventually, I needed my own machine, and in '98, I bought a Compaq, and shoved all the TI stuff out to the garage. The wife bugged me to get rid of that stuff, just spend about $15, and take it all, hardware, software, and books, all to the dump.
Instead, I sold it all in 20+ separate lots on eBay, and got over $400 for it!