@westenotto It’s true that many potential buyers will shy away from sellers without feedback in the hobby. That’s the case selling here, the US site alluded too, or anywhere else. hifishark is a great place to look up prior sales for the same items.
You can then have an idea of the value, but first you should confirm everything is working correctly.
If you want a fair wholesale value(about half retail value, maybe a bit more depending on the piece,) tmraudio aka The Music Room is probably the top outfit that will simply buy it all. What you clear will be less, but so will the headache. This is a far better alternative than selling via "estate sale" type services who don’t know high end gear. Cheers,
Spencer