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I see a Strong Mount, a Bullet Tray and a Roller Handle.
Each of those are "add-ons" which add some value, so look those up and add maybe 50% of each of those.
With all that stuff, I'd call $500-ish a "buy".
Ask him if any residual supplies (primers, bullets, brass, powder, reloading manuals, etc.) are hanging around...I think I see a box of bullets.
None of that stuff will be of any value to him, but for you? Just value added.
Good luck, and welcome to the world of reloading.