One thing I found that's incredibly useful when hunting for used CD's is the Amazon price check app. If I find something I haven't heard of before I scan the barcode and get an instant price check - then I read the user reviews. I have a 4G Galaxy Nexus and can check a bunch of albums in minutes. I love it when I scan something in the $1 bin and see a high new/used price. I need to finish up both of those bands too. They're on the list.....
Most of the used bins I am looking at are less than $3 so they will be cheaper than Amazon. If I look in the $5 bin of new CDs I always check Amazon to see if it is a good deal. I am only missing a few of the Church albums, but those last few are all imports of over $20 a piece. Not sure if I am willing to pay that much at this time.
