Staples: Sparkle Paper Towel 30 Roll Case for $19.99 (with In Store Pick Up) is offering a 30 roll case of Sparkle 2ply Paper Towels for $19.99.  That works out to be $0.67 per roll.  These are 2 ply with 70 sheets each. 

Choose to pick it up in store to save on shipping, otherwise shipping is $9.95.