I'm a close watcher of the brand and it's secondary market. I'm seeing neither greater selling nor price reductions on the ask. I'm sure the bid is down- bidders use bad news to beat down the price.
One thing that concerns me is repairs/upgrades. It is 8 months to get into the ARC cue for a refresh or a repair. An owner who wants his Reference unit certified by ARC has a LONG wait before he has his baby working again. Let's say that same guy needs to sell his let's say Ref 5SE but he had JoBloStereo do some repairs. A prudent buyer would discount the unit. Now it's a $2500 preamp and not a 5K preamp. That will indeed depress prices.
I "inherited" a VT130 that was blowing up screening resistors. ARC put me in line last August and I'm STILL waiting for the RMA from Mr.Christenson. Now if I HAD to sell it (death divorce debt) it's not a 3K amp it's a 1K amp. Maybe a $500 amp.
There is always the panic seller- and the almost out of warranty seller. And the broke seller. All these guys depress value. That's the way the free market works.