Steel thickness is stated as a gauge number, and a lower number means thicker metal. Finish names like bronze tone or pewter describe paint, not substance.
Manufacturers routinely build one shell and sell it as several models by changing interior fabric and handle style. Asking for the model number often reveals two units are structurally identical.
The rolled steel or lumber in a mid-range casket is a smaller share of the retail price than most buyers expect. Commodity cost rarely explains the spread between adjacent models on the floor.

Cast zinc corners and swing bars weigh noticeably more than stamped equivalents and cost more to produce. Lifting one handle tells you which you are looking at.
Crepe, twill and velvet differ in cost per yard, but pleating and tufting labor drives the price gap further. Interior work is what most upgrade steps are actually buying.
Solid hardwood means the panels are that species through their full thickness. Veneer over engineered board can look identical in a lit room and costs substantially less to build.
A family arrives at ten in the morning with four days until the service and is walked into a room holding twelve full caskets and a wall of quarter-panel cutaways. Three of the twelve are the same 18-gauge steel shell from the same manufacturer, and the arranger says so plainly when asked. What separates them is a finish name, the weight of the crepe or velvet inside, the shape of the handle bar, and several hundred dollars per step. The family has forty minutes and no way to weigh any of it. That gap, between what the price moves and what the object does, is the whole problem.
The part of a casket that a metallurgist would recognize as the product is a rolled steel box of a stated gauge, or a hardwood box of a stated species, with a lid, a rim and a bottom. Steel is bought by the ton and priced on a commodity market that the Bureau of Labor Statistics tracks as part of its producer price work, so the raw input in a mid-range unit is a smaller share of the retail figure than most buyers assume. Hardwood is less predictable, since poplar, oak, cherry and mahogany diverge sharply. Still, the shell rarely explains the spread between two models sitting side by side.
Gauge is the number worth writing down, because it is the one specification that describes the object rather than the impression. A lower gauge number means thicker metal. Solid hardwood means the panels are that wood through their thickness, not a veneer over engineered board. Both facts are verifiable, both appear on the manufacturer's literature, and both survive the drive to the cemetery.
Handles, corner castings, hinges, the adjustable bed mechanism and, on sealing models, the rubber gasket and the crank that draws the lid down are all separately manufactured parts, and they carry separate costs. Swing bars in cast zinc weigh more and cost more than stamped bars. A sealing gasket adds a rubber channel and the machining to seat it. The Federal Trade Commission, which administers the rule requiring funeral providers to hand over an itemized price list, has long been clear that no container preserves remains indefinitely, so the gasket should be understood as a mechanical feature with a manufacturing cost, not as a promise about time.
These are the upgrades that change the object. Thicker metal, heavier hardware, a sealing rim, solid wood in place of a veneer: each one is a physical difference you could measure with a caliper and a scale. If a step up the price ladder buys one of them, the money has bought something. If it buys none of them, the money has bought presentation.
Inside a mid-range casket is a fabric package: the lid panel, the throw, the pillow, the side pleating and the mattress deck beneath. Crepe, twill, velvet and satin differ in cost per yard, and the labor of pleating and tufting differs more than the cloth does. This is where manufacturers create model tiers cheaply, because a shirred velvet interior in a deeper color reads as substantially more expensive across a lit showroom than the same shell in flat crepe. Nothing about the box has changed. The interior is visible for a few hours, at the viewing, and then it is not.
That is not an argument against choosing a nicer one. It is an argument for knowing which line item you are paying, so the choice is deliberate rather than absorbed. Families who decide they want velvet, and say so, spend the same money as families who drift into it, and feel differently afterward.
The remaining share of the retail figure covers the funeral home's markup, and that markup pays for real things: the showroom itself, the inventory sitting unsold, freight, staff time, and the working capital tied up in a dozen units that turn over slowly. Markup on caskets has historically carried a large part of a funeral home's overhead, which is why the ladder of models is arranged the way it is, with the most-selected units placed at eye level and the plainest ones often at the end of a row or shown only as a photograph in a binder. Caskets bought from a third-party seller strip that portion out, which is precisely why the price difference can be large, and why federal rules bar a provider from charging a handling fee for accepting one.
Ask for the manufacturer name and model number of every unit under consideration, then ask for the gauge or the wood species, then ask whether the unit is sealing. Three questions. With those answers, two caskets that look a tier apart often turn out to be the same shell in different clothes, and the decision collapses to a straightforward one about fabric and hardware, which is a decision a tired family can actually make. Photographs and specification sheets for the same model numbers are usually available from the manufacturer or from online retailers, and comparing them takes minutes.
The object that goes into the ground is defined by four or five measurable facts. Everything else on the price tag is the room it was standing in, and knowing which is which is what makes the number on the contract a choice rather than an accident.