Model Kit Store Price vs Online Cost in Japan

Compare in two lines

Use the same kit and currency for both options. Write down each amount once; if a quote already includes a charge, do not add it again.

• Carry home: store checkout amount + extra travel + packing + extra baggage + payment fees + destination charges for carried goods.
• Deliver home: online checkout amount + shipping and packing + any service fees + payment fees + destination charges for the shipment.

Mark each missing amount unknown, rather than zero. Compare completed totals only after both options meet your packing, arrival and returns requirements. If you only have partial quotes, the worked example shows how to compare known subtotals without declaring a winner.

Already have both item prices? Use the shipping-limit calculation to see how much delivery can cost before the online option loses its saving. Still missing an exact match? Follow the same-kit listing checks first.

Match the contents and the packed box first

Match the manufacturer, product number, grade, scale and edition. A clear-color or special-coating kit is not the same offer as a standard version. Then check runners, instructions, decals, included stands and any advertised extras. “Unassembled” alone does not establish that a secondhand kit is complete; use the contents checklist if either offer is used.

Decide whether keeping the retail box intact matters to you. Compare two options that meet that requirement. The shelf box dimensions are not the finished parcel dimensions: an outer carton and padding need room. For luggage, test the protected box against the usable space remaining after your other belongings, not just the suitcase's advertised capacity. For shipping, ask for the packed dimensions and weight. If these are unknown, mark the packing plan as unconfirmed before treating either option as cheaper.

Count the costs that buying this kit adds

Ask: “What would I spend if I skipped this purchase?” An already-planned visit can legitimately add no transport fare if buying the kit changes neither the route nor ticket cost. A special return journey, paid locker or taxi caused by carrying the box belongs in the comparison. Keep the time spent and enjoyment of the shop visit as separate reasons for your choice.

The same rule applies to baggage. Spare space within your confirmed allowance can have no extra cash cost; a new bag or extra allowance bought because of the kit is a real addition. Use the packing guide to check fit and protection first. If several purchases jointly force a new bag, compare the whole basket before allocating its cost; do not give every kit the same “free” remaining space.

On a small screen, swipe the table sideways to compare both options. With a keyboard, focus the table and use the arrow keys.

Do not assign an invented cash value to return difficulty or damage risk. Treat an unacceptable answer as a reason to reject that option, even when its known subtotal is lower.

Fictional example: spare luggage space changes the answer

All amounts, dimensions and fees in this example are invented for arithmetic. They are not retailer prices, carrier quotes or tax estimates. Both offers are assumed to be the same complete, unassembled standard-edition kit, with the same runners, decals and instructions. The retail box is 32 × 22 × 12 cm; the protected package is 35 × 25 × 15 cm and 1.2 kg. The example assumes that protected package fits the chosen carrying or shipping option.

All amounts are in yen. The item figures represent hypothetical checkout amounts; the online shipping figure includes packing. No discount is assumed. The two store columns show alternative travel plans for the same purchase, not costs to add together.

On a small screen, swipe the table sideways to compare both options. With a keyboard, focus the table and use the arrow keys.

At the already-planned stop, ¥5,200 + ¥200 + ¥100 = ¥5,500. The online subtotal is ¥6,000 + ¥1,800 + ¥100 = ¥7,900. The store has ¥2,400 of headroom before extra travel or baggage erases its apparent saving.

The special trip and extra baggage add ¥600 + ¥2,800 = ¥3,400. That raises the store subtotal to ¥8,900, which is ¥1,000 more than the online subtotal. After the ¥600 detour, only ¥1,800 of the original headroom remains for baggage, before any difference in destination charges.

There is still no final winner. Carrying an item and receiving a shipment may involve different destination treatment. Complete each option as “known subtotal + that option's confirmed destination charges.” Do not copy one option's charge into the other or turn an unanswered question into ¥0. If an unresolved charge could reverse your decision or break your budget, verify it before buying.

How much shipping would erase the online saving?

Once both offers match and every other charge is confirmed in the same currency, calculate: shipping ceiling = complete carried-home total − online item amount − online payment fees − online destination charges. Include any extra online service or packing fee in the deductions unless it is already included in the shipping quote.

A shipping quote below that ceiling makes the online option cheaper on cost; equality is a tie. A negative ceiling means that even free shipping cannot make the online option cheaper. This does not override your packing, arrival or returns requirements.

Using only the fictional figures above, the special-trip store subtotal leaves ¥8,900 − ¥6,000 − ¥100 = ¥2,800 for shipping before destination charges. The invented ¥1,800 quote is ¥1,000 below it. The planned-stop subtotal instead gives ¥5,500 − ¥6,000 − ¥100 = −¥600 before destination charges. These remain provisional comparisons: replace the missing destination charges for each option before deciding.

Use the quote for the route you would actually use

For an online order, use the seller's offered delivery service and checkout quote. Match the kit, delivery destination and dispatch status before using a listed price. A carrier's public rate is not automatically the seller's charge.

If you would buy in store and post the kit yourself, make that a third option: store checkout + added travel + packing + postage + payment fees + destination charges. Do not also add airline baggage for that same parcel.

The Japan Post international mail page links to rates, service information and country availability. Check that the destination and service are accepted, and that your actual packed parcel meets the relevant limits, before using a postage figure. A displayed estimate does not guarantee an arrival date.

Source checked October 3, 2026: Japan Post's international mail information and its linked service-availability page. This check confirms where to look, not a quote or acceptance decision for your parcel. Check destination customs and the seller or carrier for costs not included in the quote; no destination tax rate is assumed here.

A light kit can still be too large for Small Packets

For Japan Post’s Small Packets service, an ordinary rectangular package must be no heavier than 2 kg, with its longest side no more than 60 cm and length + width + thickness no more than 90 cm. The minimum address face is 14.8 × 10.5 cm. These published limits were checked October 3, 2026; rolled items have separate rules.

• The example package above: 35 + 25 + 15 = 75 cm, longest side 35 cm, weight 1.2 kg. It fits these dimensional and weight limits.
• A second fictional package: 45 + 30 + 20 = 95 cm, still only 1.2 kg. It exceeds the combined-size limit despite being light enough. Seek a suitable service and quote before comparing its delivered cost.

Measure the outside of the protected parcel, including the outer carton. Passing this size check does not establish destination acceptance or the suitability of its contents. The Small Packets page describes this as unrecorded mail; if tracking is a requirement, select an appropriate recorded service rather than assuming the lowest postage meets it. Use the current Japan Post service and destination information for the next check.

Save the comparison and a stopping rule

Use the Fieldbook's two-option comparison to keep the edition, contents, amount with currency, packing and returns notes together. Put unresolved charges and the next question in its checks section. Copy or download the note before leaving; entries clear on reload.

Add each option separately as shown above. The budget calculator supports a single-price quantity estimate or a basket of different kit prices and quantities, together with your budget, transport and reserve inputs; it does not calculate separate store and online landed totals or determine import charges. If quotes use different currencies, record the conversion rate and any payment fee you actually expect to use, avoiding fees already included in a quote.

Finish with a rule you can act on: “Buy only if this complete kit fits my confirmed packing plan, the full cost fits my limit, and the arrival or return arrangements work for me.” For an event or gift, rule out options that do not meet your deadline before comparing price. A low subtotal does not compensate for a kit you cannot bring home safely or use in time.