Back-to-School deal on ink & toner cartridges: Take $15 off any $65+ printer cartridge order plus get Free Shipping with promo code 15SEP65. Anyone with a printer can benefit from a deal like this.  Offer can be used until 09/30/2015.

And just saw this additional promo code on HIP and it worked for me (sometimes they are email-specific): H2S10X10.  It took $10 off my $24.99 purchase!  Standard shipping adds $3.99.