Amazon has a 48-count package of Quilted Northern Double Rolls of toilet paper on sale for $22.74 when you choose Subscribe & Save. Clip the $1 off coupon to knock the price down to $21.74 for 48 double rolls.
This makes these $0.45 per double roll.
Be sure to cancel your subscription after your first order ships.
Thanks, My Frugal Adventures!
(Note: The link in this post is my referral link. Read my disclosure policy here.)