Thanks, all, for the great suggestions =D.

Just bought 100 of these dust jacket protectors, it was a really good offer! Thanks everyone for their suggestions and Urolókë for the link, excited to put these on my books!

I got an email from Brodart saying that "archival products" will be on sale in March and "book jacket covers" in June. No specifics, though there was a "Save Up To 35%" line.

All Brodart jacket protectors are on sale for 25% off this month, until the end of June.