5970's have been popping up on newegg.com every few weeks and they have dropped to $329! - that's off the top of my head, but I'm pretty sure it's true.
Yep, this link should confirm:
http://www.nowinstock.net/computers/videocards/ati/radeon5970/full_history.phpJan 31 - 6:27 PM EST
Newegg - 5970 - Diamond A5970PE52G Out of Stock
Jan 31 - 4:27 PM EST
Newegg - 5970 - Diamond A5970PE52G In Stock for $329.99
Jan 23 - 7:27 PM EST
Newegg - 5970 - Diamond A5970PE52G Out of Stock
Jan 23 - 6:27 PM EST
Newegg - 5970 - Diamond A5970PE52G In Stock for $329.99
Jan 05 - 12:27 PM EST
Newegg - 5970 - Diamond A5970PE52G Out of Stock
Jan 05 - 11:27 AM EST
Newegg - 5970 - Diamond A5970PE52G In Stock for $329.99
Dec 23 - 7:27 PM EST
Newegg - 5970 - Diamond A5970PE52G Out of Stock
Dec 23 - 3:27 PM EST
Newegg - 5970 - Diamond A5970PE52G In Stock for $329.99