In my search for decent blank media deals, I came across a seller on ebay who seems to offer a decent deal. I won a bid for a 50pk spindle for $38 on a saturday and received on a tuesday. This is a link to all his auctions:
http://cgi6.ebay.com/ws/eBayISAPI.dll?V ... =3&rows=25
The buy it now prices aren't so good, but the bidding prices are decent, just remember to take into account shipping. I've seen bidding frequently close under $1 per disk. If there are no auctions, just wait a few days as he seems to put new ones on frequently.