Most of what goes wrong with a printable purchase is not the design. It is a mismatch between what the file actually is and what the buyer assumed it was.
A file sized wrong, a license that does not cover a classroom, an "editable" template that needs an account you do not have. None of it shows up in the thumbnail. These guides are the questions worth asking before you pay, not after the file has already downloaded.
The planner that gets used is rarely the prettiest one.
The test is whether it saves you an evening, not how many files it contains.
"Large print" is not a fixed size — check what it actually means here.
A single-child license and a classroom license are not the same purchase.
"Editable" is not one feature — it is several different ones.
The format decides print quality more than the design does.