Clear aligner prices span a wide range for what appears to be the same product. Most of the spread comes from case complexity and from how much clinical involvement is included.
Tray count scales with the movement required
Each aligner moves teeth by a small increment, so the number of trays is set by the total distance the teeth must travel.
Mild crowding may need a short series, while a case involving substantial movement across both arches can need many times that number.
Since every tray is individually manufactured from its own printed model, the number produced is a direct driver of cost before any clinical time is counted. Providers price in bands for this reason.
Planning is skilled work, not an automatic output
Software generates a proposed sequence, but a clinician decides which movements are attempted, in what order, and where attachments are placed.
That plan has to account for the bite, gum and bone health, root positions and what is realistic for the individual.
Time spent on planning and on revising it during treatment is part of what separates supervised treatment from a mail-order product.
Refinements are common and not always included
Teeth do not always track the planned movement precisely, and a further series is frequently needed to finish the case.
Some fee structures include refinements within the original figure, while others charge separately once a stated number of trays is exceeded.
This is one of the larger sources of difference between quotes and is worth establishing before treatment rather than during it.
Supervision models differ substantially
In-person review allows the clinician to check tracking, assess gum health and detect problems that photographs do not reveal.
Remote models reduce cost by reducing appointments, and they rely on the person to report changes and on images they capture themselves.
The distinction is not merely convenience. Tooth movement in the presence of untreated gum disease or decay carries real risk, and detecting those requires examination.
What sits outside the headline figure
Records, imaging, attachments, any reshaping between teeth and treatment of existing conditions before movement begins may be charged separately.
Retainers are a continuing requirement rather than an optional extra, and whether the first set and later replacements are included varies between providers.
An itemised plan showing what is covered, what is conditional and what happens if the case does not finish as planned is what makes two quotes comparable.