Fidelity Elite A/S Chess Challenger (1983)

Hey everyone, my Dad has a 1983 Fidelity Elite A/S Chess Challenger in great condition, and he's wondering how much these things sell for, or if it's even worth selling? Has the manual but doesn't have the original box and it doesn't have a printer. I think he bought if for ~$275ish back in 1984.

Thank you!

I had sold an elite a/s 2335 model duel clock a few years back for $2500 on eBay. Had a special red plastic disk affixed to the top right corner.

I did have original box and manual

Much less expensive version, bought it early 80s. Still works.

Thank you everyone!

I sold my Elite Budapest in excellent condition, including the original packaging and the additional CB16 openings module a couple of years ago for €850.