Looking for some used floppy media

I'm in need of some blank floppies... I need 8" soft sector disks for my TRS-80 Model II, I'm building an adapter cable to hook an 8" drive to a PC so I can write system disks for it. I've also got a Model 16 that's begging to get revived. I could also use some more 5 1/4" DSDD disks - I'm beginning to run low. A while back I had rescued a very large box of used disks from a school basement - and it turns out that they must have gotten damp at some point in their past life. Many of them have that "disk fungus", and won't format. I thought I was set for disks, and hadn't sought more out in years. I am primarily looking for used disks, I know that I used to run across large boxes of used 5 1/4" disks pretty regularly, but that was a few years ago. Thanks! -Ian