Sagami Original 0.01 five-pack vs 0.02 twenty-pack

Both listings specify polyurethane. The model designation and number of items per box differ.

Record the pack data separately

The 0.01 listing states 0.01 mm and five per box. The 0.02 listing states 0.02 mm and twenty per box. Both list polyurethane. These are supplier specifications.

Use two comparison bases

Compare the price per item and then match the exact size, labelled variant and order quantity. The stated thicknesses were not independently measured.