Oopbuy shipping discounts: compare the final amount

Comparison one: the cap reverses the winner

Illustration only: both offers below apply to the same ¥300 eligible freight charge. A separate ¥20 charge is excluded from both discounts. Assume either offer can be used, but they cannot be stacked.

Offer B leaves ¥10 less to pay. Offer A's percentage looks stronger only until its maximum saving is applied. These figures are invented examples, not active Oopbuy offers.

Comparison two: the discount base matters too

Keep the same parcel and a ¥260 payment, but split it into ¥200 eligible freight and ¥60 of excluded charges. A hypothetical 15% discount on the eligible freight saves ¥30, leaving ¥230. A hypothetical ¥35 coupon with its conditions met leaves ¥225.

Applying 15% to the full ¥260 would incorrectly suggest a ¥39 saving and a ¥221 payment. That mistake changes which offer appears better. The comparison must use the amount named by each offer, not the largest total on the page.

A fair comparison keeps the parcel unchanged

Write down the route, destination, packed measurements, included services, eligible subtotal, cap and final payable amount for each accepted offer. If applying a promotion requires switching routes, first check route acceptance and conditions. A lower price for different carriage conditions is not just a coupon saving.

Similarly, do not compare a preliminary estimate with another parcel's settled freight. Note which stage each figure belongs to and whether the discount has already been applied. Subtracting it twice makes the cheaper-looking result fictitious.

Choose the lowest acceptable payable amount after the offer is applied, not the most impressive banner. If the total still contains charges you cannot identify, use shipping cost components. If an offer fails before you can compare it, start with coupon troubleshooting.