I will put together a list shortly, but I have a whole stack of hard drives sitting around as well as multiple NAS that aren't in use anymore. I will be looking to clear them out, feel free to get in touch if you are interested.
NAS
Seagate BlackArmor NAS 400 (4 bay) $110
Qnap TS-219P+ (2 bay) $200
Thecus 4bay (model number will be added later)
Hard Drives
four Seagate 2tb constellation ES $70 each
one WD 2tb black $85
1 3tb Seagate Barracuda XT $90 each
bump added prices, a few people asked about the 3tb drives. Also shipping isn't included in the prices (i tried to keep them all well under ebay and amazon prices so they should be fair)