All bulk recyclers cut the cords off of gear immediately when it's brought in. I've bought most of my gear from these kinds of sources for years, and having to replace most cords annoyed me at first, until I realized that there are excellent reasons for it, from their standpoint.
One reason that isn't obvious to outsiders is the sheer inconvenience and danger --yes, danger!-- of having cords attached to gear that is stacked up and moved around, unloaded and loaded in a warehouse space, sometimes under time pressure. Cords get in the way, get tangled, get tripped over, and can easily pull down a whole stack of gear when someone is trying to lift a few pieces off the top of a stack to get to something. Having a stack come crashing down atop a worker isn't something the workers or bosses want to risk. The inconvenience of bulk/wholesale handling gear with cords is real, in the context of their business.
Add to this the fact that a fair portion of this gear is heading for recycling centers, where it will be dismantled and separated, anyway. Why not start that process a bit earlier, by cutting off the cords and tossing them all into a big box near the entrance, making it easier for someone to come along and strip out the copper all at once. Copper is expensive these days!
If a particular unit ends up being sold as-is and not dismantled, the new buyer can always stick a cord back on. The small difference (IF ANY) in price between a unit with a cord and one without a cord, isn't worth the hassles and risks of leaving cords on.
It's an unfortunate nuisance for those of us who buy these units for collection, but a small price to pay for the cheaper prices the gear itself commands at these places. And with luck, we can still find original Marantz, etc... cords when we need them, by rummaging through those boxes near the entrance...