While in the process of moving to a smaller place recently, I decided to dispose of my CD collection, which I only listened to in the car any more..
I had about 1100 CD's, all in VVG to excellent condition. About 1/2 of the collection were jazz & jazz vocals. 1/4 more was classical and the remained was a mix of everything else (rock, country, world, oldies...).
I called around to some stores but most didn't want to come out to give me a bid. Instead, they wanted me to come to them with the CD's. But I refused to do that because then they would have me over a barrel after I dragged all the CD's to their location.
I finally managed to get someone from Amoeba to come out but the guy proceeded to give me what I considered to be a low-ball offer of $500 for the whole collection. Sheese. I told him no way.
I was also in contact with someone named Cameron for the Rasputin store in Berkeley. I had called a Rasputin store in Mountain View previously but they were not interested in coming up to the Burlingame area to look at the collection. Cameron kept promising someone would come out but they kept missing appointments. However, I persisted and after about 4 weeks, someone from the store managed to show up. He turned out to be a knowledgeable person and we had a good conversation about music.
He spent some time looking through the collection and ultimately wound up making a very fair offer of $2200 for the collection, significantly more than Amoeba offered.
So if you are selling music (CD or vinyl), I would recommend trying Rasputin but definitely avoid Amoeba.