To align with numbers cited in the article: Kirkland Signature 30 pack[1]: 380 sheets/roll 4.5"×4" sheets $23.49 cost per pack $0.016/square foot Kirkland

To align with numbers cited in the article: Kirkland Signature 30 pack[1]: 380 sheets/roll 4.5"×4" sheets $23.49 cost per pack $0.016/square foot Kirkland Signature Ultra Soft 36 pack[2]: 231 sheets/roll 4.5"×4" sheets $24.99/pack $0.024/square foot Charmin Ultra Soft 30 pack from Costco[3] 213 sheets/roll 4.5"×4.2" sheets $27.49/pack $0.033/square foot [1] https://www.costco.com/kirkland-signature-bath-tissue%2c-2-ply%2c-380-sheets%2c-30-rolls.product.100645583.html https://www.costco.com/kirkland-signature-bath-tissue%2c-2-p... [2] https://www.costco.com/kirkland-signature-ultra-soft-bath-tissue%2c-2-ply%2c-231-sheets%2c-36-rolls.product.4000206004.html https://www.costco.com/kirkland-signature-ultra-soft-bath-ti... [3] https://www.costco.com/charmin-ultra-soft-bath-tissue%2c-2-ply%2c-213-sheets%2c-30-rolls.product.4000221238.html https://www.costco.com/charmin-ultra-soft-bath-tissue%2c-2-p...