The old stuff, at least at one point, was worth serious BANK on eBay etc. Mainly because the old sets were easier to hack I guess. The dish.. not so much since they've hardly changed at all.
I had three RCA boxes of the older 1999 vintage from our apartment, and I had nobody to return them to since the leasing company went bankrupt. The apartment complex didn't want them either. So they moved with me to Casa del Dual, and I sold them for $250 each around 2002. Made a nice $750 to fund some gun stuff with that. Some friend of a co-worker literally drove over the same day he learned of them to pay me for them, he wanted them so bad for whatever it was he thought he could do with them...
OTOH, it might be worth nothing because of tech passing them by, and being unable to handle HDTV etc. I would look up your model on the B/S/T sections of some DSS forums, or eBay.