$100, $300, $500: Three Ways to Spend a Kakobuy Budget

$100, $300 and $500 are not three sizes of the same parcel. They are three different relationships between goods value and the freight line, and the relationship is what decides whether the shelf holds. The clearest way to see it is to price each shelf against the same six-row fee block, with commission at 5 percent, the payment surcharge at 3 percent and international freight at $45 per parcel, and then read the freight share rather than the total.

The $100 shelf is drawn from T-Shirts at a median of $22.23 and Headwear at a median of $16.22, which are the two cheapest categories in the pool apart from the low end of Accessories. Three items at those medians, one tee and two headwear pieces, give a subtotal of $54.67. The shelf name refers to the goods allowance here, and the arithmetic below shows why that distinction matters once the freight line is added.

A fourth item changes the shape of the shelf more than it changes the total. Two tees and two headwear pieces at the same medians give a subtotal of $76.90, and the landed figure moves to $133.94, with freight falling to 33.6 percent of it. The goods allowance has grown by $22.23 while the landed total has grown by $25.49, which is the marginal cost of a fourth row once the parcel is already being paid for.

If $100 has to be the landed ceiling rather than the goods allowance, the shelf holds two headwear pieces at the median and nothing more. That pairing lands at $82.97, with the freight line taking 54.2 percent of the total. Treating the ceiling as landed rather than as goods is the single decision that changes this shelf most, and the calculation at /instrument/landed-cost/ is built to make that choice explicit before rows are added.

The $300 shelf moves up a category tier, to Hoodies and Sweaters at a median of $37.18 with 26 entries in the pool, and Pants and Shorts at a median of $44.62 with 25 entries. Both bands are deep enough to shop below the median without leaving the tier, which is what makes this shelf the most forgiving of the three: a purchase that lands below the median still produces a coherent outfit rather than a compromise.

Five items at those medians, three hoodies and two pairs of shorts, give a goods subtotal of $200.78. The table below carries the full fee block for that configuration, and the change worth noting is on the freight line, which falls from 41.5 percent of the total on the three-item $100 shelf to 16.7 percent here without any change to the $45 setting.

At a goods value of $200.78 the destination line stops being hypothetical. The German €150 threshold is crossed comfortably, which would add 19 percent and a €6 handling fee, and the UK £135 line is close enough that the conversion used in the sheet decides it. Under the German line the tax and fee would add roughly $38 before the handling charge. That is a larger single addition than the entire domestic shipping line for the parcel.

The category depth is what makes this shelf work. Twenty-six hoodie entries and twenty-five pants entries mean a buyer can assemble five rows without reaching for the top of either band, where Hoodies and Sweaters run to $101.88 and Pants and Shorts to $69.20. Two rows taken from the top of those bands would cost more than the other three combined and would push the shelf past its own ceiling.

The $500 shelf is the first one that can include Shoes, at a median of $68.68 across 24 entries, or Jackets at a median of $53.89 across 24. It is also the first shelf where the freight line stops being a constant, because a shoe box is the classic volume-driven carton and the divisor begins to matter more than the weight of the goods.

A seven-item configuration shows the arithmetic: two pairs of shoes, two jackets, two hoodies and one pair of shorts at their category medians give a goods subtotal of $364.12. The fee block below carries it as a single parcel, which is the optimistic case, and the paragraph after the table prices the realistic one.

Shoes account for 24 entries in the pool at /vault/shoes/, and a shoe box is where the volumetric divisor earns its place in the sheet. A carton of 40 by 30 by 20 centimetres bills at 4.00 kg under a 6000 divisor against an actual 2.5 kg, and the difference costs $13.50 at a marginal rate of $9 per kg. Under a 5000 divisor the same carton costs $20.70, and under 7000 it costs $8.37.

Category depth is what makes the seven-item configuration possible at all. Shoes and Jackets hold 24 entries each, and Hoodies and Sweaters hold 26, so the shelf can be assembled from the middle of three bands rather than from their edges. It is also the shelf where a rehearsal pack pays for itself, because the measured dimensions of two shoe cartons decide whether the parcel stays whole, and that decision is worth more than the fee charged for taking the measurement.

If the shoe boxes force a second parcel, the freight line doubles to $90 and the landed figure moves to $493.89, with freight and tax at 18.2 percent of the total. Add a single volumetric top-up of $13.50 on the shoe carton and the shelf reaches $507.39, which is over its own name. The $500 shelf is therefore the one where the plan holds only if the parcel stays whole, and it is the shelf where a rehearsal pack is worth requesting before the box is sealed.

Reading the three shelves side by side shows that the freight share falls steadily while the cost per item rises. That is not a contradiction. The share falls because a fixed $45 is spread across more goods. The cost per item rises because the items themselves are more expensive, and no packaging decision changes the price of a shoe relative to a tee.

Two marginal numbers decide where the shelves stop paying. On the $300 shelf the fee block totals $68.57 against goods of $200.78, a blended rate of 34.2 percent. On the $500 shelf the fees total $84.77 against goods of $364.12, a blended rate of 23.3 percent. The last $163.34 of goods therefore carries only $16.20 of additional fees, a marginal rate of 9.9 percent, which is the strongest argument in the whole comparison for adding items rather than stopping early.

That argument expires at the parcel boundary. Once a second carton is required, the marginal $45 appears at once and the split-parcel row shows the result: freight and tax rise from 10.0 to 20.4 percent of the total, which is worse than the $300 shelf was before any shoes were added. The practical rule is to add rows while the parcel holds and to price the second carton before assuming the shelf still works.

Destination tax is the last variable and it is not proportional to shelf size. Canada crosses a CAD 20 threshold on the first item at every shelf, so 13 percent and a CAD 9.95 fee apply from the $100 shelf upward. The German €150 line is crossed at the $300 shelf, where 19 percent of a $200.78 goods value is roughly $38 plus the €6 fee. Only the US $800 line stays clear of all three, which makes the shelf comparison a comparison for one destination at a time.

In dollar terms the German line alone moves each shelf past its own name. The $100 shelf at $54.67 of goods picks up 19 percent, or $10.39, and lands at $118.84. The $300 shelf at $200.78 picks up $38.15 and lands at $307.50, which is over its ceiling. The $500 shelf at $364.12 picks up $69.18 and lands at $518.07, which is over its ceiling as well. A Canadian reader sees the same effect arrive earlier, because 13 percent and a CAD 9.95 fee apply from the first item at every shelf.

The catalogues at /vault/t-shirts/ and /vault/hoodies-sweaters/ are the two places where the medians used above can be checked against specific rows, and the difference between a shelf built at the median and a shelf built at the top of a band is the difference between the numbers in this note and a total half again as large.