Using the table below, what is the most efficient way to fill columns D and E with the ranks $($both in descending order$)$ for cost and sales price of the stationary items?

$\backslash$table$[[,$A$,$B$,$C$,$D$,$E$],[1,$Item,Cost,Sales Price,Cost Rank,Sales Price Rank$],[2,$Notebook,$$0\mathrm{.}88,$$$1\mathrm{.}76,,],[3,$Binder,$$1\mathrm{.}30,$$$2\mathrm{.}60,,],[4,$Staple,$$1\mathrm{.}05,$$$2\mathrm{.}10,,],[5,$Hole Punch,$$1\mathrm{.}20,$$$2\mathrm{.}40,-,],[6,$Highlighter,$$0\mathrm{.}95,$$$1\mathrm{.}90,,],[7,$Pencil,$$0\mathrm{.}10,$$$0\mathrm{.}20,,],[8,$Pen,$$0\mathrm{.}50,$$$1\mathrm{.}00,,],[9,$Eraser,$$0\mathrm{.}20,$$$0\mathrm{.}40,,],[10,$Sharpener,$$1,$$$2\mathrm{.}00,,],[11,$Whiteout,$$0\mathrm{.}80,$$$1\mathrm{.}60,,],[12,$Clear Tape,$$0\mathrm{.}70,$$$1\mathrm{.}40,,],[13,$Scissor,$$1\mathrm{.}75,$$$3\mathrm{.}50,,],[14,,,,,]]$