ComboInk has extended their Back to School promotion through 9/30:  Take 12% off everything with code SCHOOL.  Shipping is free for orders over $50 and only $3.99 for under.  ComboInk also has a 100% risk-free for one full year guarantee – so far, the best guarantee I’ve found.  And their prices?  Pay $68.99 at Staples for a HP P1006 black printer cartridge or $27.99 at ComboInk.  You do the math…

I’ve used ComboInk exclusively for years with never a problem – for both laser jet and ink jet printers.