One arch or two
The first thing a fee depends on is scope. A plan may address an upper arch, a lower arch, or both, and the published fees at this clinic are set per arch for that reason.
Full-mouth planning starts by mapping which teeth can be kept and which need replacing, upper and lower. That map, rather than a package name, is what a quote is built on.
The restoration type
A full-mouth plan might use a fixed restoration that stays in place, an implant-supported denture that comes out for cleaning, or a combination across the two arches.
Permanent Teeth and implant dentures are both implant-supported, and neither is a quality ranking of the other. They are different daily experiences, and they are priced differently because they are built differently.
What a published figure is and is not
Published fees on this site are starting points. What a figure includes, and whether additional care is needed before implants are placed, is confirmed at the consultation.
That is not a hedge. Extra procedures, the number of implants, and the material all move the number, and none of them can be established from a webpage.
Comparing two quotes
When comparing clinics, check that both quotes cover the same arches, the same restoration type, and the same additional care. A lower number often describes a smaller scope rather than a better deal.
It is fair to ask what is excluded, and what happens if the examination changes the plan.
No figure here is a quote. A meaningful number comes from an examination and imaging of your own mouth.