If you are looking for cheap and are ok with Highwinds then I'd wait until next months terabyte tuesday from urlhasbeenblocked. http://www.urlhasbeenblocked.com/...e-tuesday/
$38 for 1.1 tb block. Can't be beat and the same backend provider as this.
Also note that highwinds isn't bad as a primary provider but not a good backup. This combined with a EU provider for backup blocks is a good solution.
I got a 2.2 TB block a couple of weeks ago during the 2 hour special for $65 at News Group Direct (delete spaces), my main provider for the last ~ 5 years.