A model kit store sells to a builder who already knows the scale. They want a 1/48 aircraft, a 1/35 armour subject or a particular Gunpla grade, and they often know the kit number before they search. The box is one purchase. The build is many: primer, thinner, cement, filler, sanding sticks, masking tape and blades run out on every project, while the airbrush and the cutters are bought once.
That split runs through the store. Kits sell on subject, scale and what is in the box, down to the photo-etch fret and the marking options on the decal sheet. Aftermarket sells on fit, because a detail set is cut for one kit from one maker. Paint sells on system, since acrylics, enamels and lacquers thin and cure differently and builders stay with what they know.
We work with model kit stores that already sell online and want visitors, conversion rate, order value and repeat purchases to move together. The growth plan is free and written for your store. If you take it further, the fee is flat and monthly.
A builder starts with a subject and a scale, and the scale is not negotiable. Someone who builds 1/35 armour will not take the same subject in 1/48, because the shelf and the collection are in one scale. So the first filter on the store is scale, then subject, then manufacturer, then kit number.
Once the kit is chosen, the questions are about the box. Is it a new tooling or a reissue of an old mould. Does it include photo-etch, masks or resin parts. How many marking options are on the decal sheet, and are the decals thin enough to settle. Is it snap-fit or does it need cement. Part count and skill level tell a returning builder how long the weekend will be.
Then comes the shopping list the kit implies. Every colour in the painting instructions, the primer, the right thinner for that paint system, the cement, and the masking. A store that publishes the paint list for a kit turns one box into a full basket.
Aftermarket buyers search the other way round. They search the kit they already own plus the thing they want to add, so a detail set page has to name the exact kit and maker it fits.
Stock matters more than price. Reissues and limited runs disappear and come back, so builders check availability first and buy when they see it.