Good price for used enterprise sas 4+TB HDD?

[wildpig1234]

I need to get at least 10 for my archival need soon. Hopefully with no bad sector. Of course i will run a complete surface write/read test once i get them.
What would be a good price for ten 4 TB? I found a few places selling twelve 4TB for $400 but i figure there might be better deals around.
I don't want anything less than 4TB. If there is good deal on 6 or 8TB, even better.

Thanks

 

[zack$]

Got 10 4tb WD RE @ $30 each then 8 more @ $120 for the lot from @Dark last year.

One drive had bad sectors out of the first 10 so he gave me the latter 8 at BOGO. Excellent seller.