Cookware is sold in sets described by a piece count, and that number is doing more marketing work than it appears. What counts as a piece is the first thing worth examining.
The piece count includes items you would not buy
Lids are usually counted separately from the pans they cover, so a set of five pans with five lids is advertised as ten pieces.
Plastic utensils, trivets and measuring spoons are often included in the total as well, each adding to the headline at negligible cost.
A large advertised number can therefore describe a modest collection of actual cooking vessels, and comparing sets by piece count compares the packaging rather than the contents.
Sizes are chosen to fill the box cheaply
Small pans cost far less to make than large ones, since material cost scales with the metal used.
Sets are commonly weighted towards the small end, giving several pieces that are rarely used while the sizes cooked in most often are missing or represented once.
Checking the actual dimensions against the pans you use every week usually reveals whether the set matches how you cook or how it was costed.
Construction varies within one set
A single set can mix heavy multi-layer bases on the frying pans with thin single-layer construction on the saucepans, because the base is where a shopper checks.
Handles are another divergence point, with riveted metal on some pieces and moulded plastic on others in the same box.
The published description often gives the specification for the set as a whole, and the exception is discoverable only in the detailed listing or by handling the items.
Coatings determine how long the set lasts
Non-stick surfaces wear out on a timescale measured in years of regular use, and their durability depends on the coating type and the number of layers applied.
That information is frequently reduced to a brand name for the coating rather than a description of what it is, which makes comparison difficult.
Since coating failure ends a pan's useful life while the metal beneath is still sound, it is the specification that decides the real cost per year.
Hob compatibility limits the field
Induction hobs require ferrous bases, and not all cookware qualifies, including some sets sold prominently alongside induction appliances.
Oven safety is a second constraint, usually limited by the handle material and stated as a maximum temperature in the small print.
These two checks eliminate a good share of the options quickly, and doing them before comparing prices avoids evaluating sets that were never suitable.