For professional slickdealers. Version 2021-02-07. By TidalWaveOne.
Final price is before any tax.
TofuVic, a toilet paper expert, thinks the "purchase point" is 0.253¢ per sheet.
Costco sells 30 rolls (2-ply w/380 sheets per roll) for $16.49 in warehouse (Kirkland Signature brand), which is 0.145¢ per sheet. Online the price rises to $18.99+$3 delivery fee for 0.193¢/sheet. This may vary by location as some locations may still be showing 425 sheets per roll (the old size).
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Questions or comments? Email me at tpcalc at wiersch dot com.