Abstract. Two quotations for the same seafood display tank are rarely describing the same purchase, and the difference is usually scope rather than hardware. Take any two quotes and split them into three blocks — cooling, structure, and the delivery boundary — then price each block on its own before you look at the totals. Cooling is where the money actually is: a standalone compressor chiller in this category runs from 322to 1,098, against display tanks quoted from 768to 2,259. Structure is where a stainless cabinet, an integrated sump and low-iron glass quietly separate. And the delivery boundary decides whether the two numbers can be compared at all.
Where a five-fold price band comes from
Start with the spread, because the spread is the honest part of this market.
Across the commercial Seafood Display Tanks I priced through Ruibit's Alibaba storefront, sixteen listings sit inside a published band of roughly 528to 2,650, all at a minimum order of one piece. That is a five-fold range for what a buyer reasonably describes as the same kind of product.
No single attribute explains it. Taken together, three do.
Cooling is not a footnote
The cheapest way to get this wrong is to treat refrigeration as an afterthought and assume the tank arrives cold.
What is actually published varies a great deal. One single-tier 100-litre unit lists compressor options at 1.5, 2.0 and 2.5 horsepower on a 110–240 V supply, priced from 768to 2,259 across six size steps starting at 100 × 90 × 110 cm. A larger commercial rectangle unit in the 200–1000 litre range lists an integrated water chiller and an integrated sump filtration system at 528to 1,600. A multi-layer refrigerated unit in the 500–1200 litre range runs a separate chiller and quotes 686to 2,026.
Do the arithmetic on those bands and something uncomfortable appears. The standalone chiller block alone runs 42 to 49 percent of the low end of the tank price. A quote that excludes cooling is a quote for a different product, and the gap gets paid later at retail chiller prices.
One horsepower is about 0.75 kW, so a 2.5 hp option is roughly 1.9 kW of compressor — and that figure, rather than the litre count, decides whether the kitchen's electrical supply can carry the unit through a summer service.
Four kilograms for every litre it displays
Structure is the block buyers least often price separately, and it is the one that shows up in freight.
A 100-litre single-tier system is published at 400 kg. Empty. That is four kilograms of steel, glass, chiller and frame for every litre of water it holds, and it changes three things at once: the floor or plinth it needs, the freight it attracts, and the fact that unloading it is a job for more than two people.
One unit names a stainless steel cabinet with ultra clear glass; another names low iron glass and a separate chiller; sizes run from 100 × 90 × 110 cm upward in six steps. What no listing states anywhere is glass thickness, or insulation specification. Those two omissions are precisely why two visually identical tanks can be quoted 60 percent apart, and they are the first thing I ask a supplier to put in writing.
The boundary that decides whether two quotes are comparable
Here is the myth worth dismantling properly. Buyers treat a quotation as a price for a product. In this category, a quotation is a price for a boundary.
Two things stand out from that table. Packaging is inside the boundary and it is not cosmetic: an export wooden crate implies ISPM 15 treatment and a stamp, because untreated solid wood packaging is refused at a great many borders. A carton versus a crate difference on a 400 kg unit is a real cost line, and it belongs in the comparison rather than in the surprise column.
The second is the one nobody quotes. Installation, commissioning, water treatment and staff training appear in no listing I read, which means they are the buyer's scope by default. On a chilled seafood display in a working restaurant, that is where the real project cost sits, and it is decided by whoever is standing next to the unit when it is first powered.
One more boundary question deserves asking early. Refrigerant choice is regulated on both ends of the route, under the EU F-Gas rules and the Kigali Amendment phase-downs, and a chiller that is compliant in one market may be awkward to import into another. Ask which refrigerant the unit uses before you ask for the discount.
When the listing contradicts itself
A caution I would give any buyer comparing this category: verify the specification against a second source, because platform-generated attribute fields are not reliable.
On one 500–1200 litre refrigerated unit, the automated attribute block lists a volume of 1.5 L and a power of 100 W. Neither is plausible against the tank's own dimensions; both look like template errors. The same product shows 686–2,026onthesearchpageand 965.51–2,851.47 on its detail page.
None of that is a reason to distrust the supplier. It is a reason to insist the specification you buy against exists in a document the supplier signs, rather than in a field the platform filled in. Ask for the drawing, the chiller rating, the glass specification and the packaging description on one sheet, with a model number on it.
The quote I signed, and the one I should have
Composite rather than a single identifiable project.
We were pricing a chilled seafood display for a hotel restaurant, about 1,000 litres across two tiers, and we took the lower of two quotes. It integrated the chiller into the cabinet and named a carton for export.
What it left out was the electrical work to feed a 1.9 kW compressor at the far end of a kitchen, the floor reinforcement the plinth eventually needed, and the commissioning. All three were ours, and together they cost more than the difference we had congratulated ourselves on.
The second quote had those lines in it. I read them as padding at the time. They were scope.
FAQs
Should I buy an integrated chiller or a standalone one?
Integrated is tidier and usually cheaper to install, and it puts the compressor inside a cabinet where service access is tighter. Standalone is easier to replace. If the unit runs in a humid enviroment and the kitchen cannot tolerate downtime, serviceability should outrank the price difference.
Why do two suppliers quote the same litre capacity so differently?
Because litre capacity is one line of maybe thirty. Glass thickness, insulation, cabinet material, chiller rating, packaging and warranty all move the number, and none of them appear in a one-line comparison.
Is the 7-day lead time realistic?
Seven days is what the listings state, and freight is listed as to be negotiated. Treat the lead time as an ex-works figure until you have a ship date in writing with an Incoterm attached.
What should I ask for before signing?
A dimensioned drawing, the compressor rating in kW, the glass specification, the packaging description, the refrigerant type, and a written statement of what is excluded. Six items, one email.
